JPH0250181B2 - - Google Patents
Info
- Publication number
- JPH0250181B2 JPH0250181B2 JP21127081A JP21127081A JPH0250181B2 JP H0250181 B2 JPH0250181 B2 JP H0250181B2 JP 21127081 A JP21127081 A JP 21127081A JP 21127081 A JP21127081 A JP 21127081A JP H0250181 B2 JPH0250181 B2 JP H0250181B2
- Authority
- JP
- Japan
- Prior art keywords
- contact
- brush
- sliding
- weight
- plate 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
Links
- 239000000463 material Substances 0.000 claims description 27
- 229910052738 indium Inorganic materials 0.000 claims description 8
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- 239000000314 lubricant Substances 0.000 description 7
- 229910000906 Bronze Inorganic materials 0.000 description 5
- 239000010974 bronze Substances 0.000 description 5
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
Landscapes
- Motor Or Generator Current Collectors (AREA)
Description
本発明は、小型モータの整流子外周に摺接する
刷子接点の刷子板材を作る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。
従来より小型モータの整流子外周に摺接する刷
子接点の刷子板材を作る摺動接点材料としてはり
ん青銅（P0.01〜0.5、Sn7.0〜9.0、Cu残部）が用
いられてきたが、りん青銅では耐摩耗性が劣り、
摩耗粉が生じ易く、摩耗粉が生じると、ノイズが
発生するという欠点があつた。
本発明は、かかる欠点を解消すべくなされたも
ので、耐摩耗性を向上させ且つ接触抵抗を低く安
定させたりん青銅系の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、P0.01〜0.50重量％、
Sn6.5〜9.0重量％、Nb、In及びBaの少なくとも
一種を合計で0.5〜7.0重量％及び残部CuのCu合金
から成るものである。
かかる本発明の摺動接点材料に於いてP0.01〜
0.50重量％、Sn6.5〜9.0重量％、Nb、In及びBa
の少なくとも一種を合計で0.5〜7.0重量％及び残
部CuのCu合金とするのは、Nb、In、Baの元素
が潤滑剤となり、耐摩耗性が向上するからであ
り、またこれらの潤滑剤の摩耗粉が軟らかくて摺
動作用により容易に除去できて接触抵抗が低く安
定するからで、Nb、In及びBaの少なくとも一種
を合計で0.5重量％未満ではその効果が無く、
Nb、In及びBaの少なくとも一種を合計で7.0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るものである。
なお、Ｐ、Snの含有量は、前記従来のりん青
銅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。
次に本発明による摺動接点材料と従来例の摺動
接点材料にて作つた刷子接点の刷子板材について
説明する。
従来の合金材料を基材とし、これにNbを添加
し、後記の表の実施例１に示す成分組成の摺動接
点材料とし、以下同様にして後記の表の左欄に示
す成分組成の本発明の実施例である摺動接点材料
と従来例の摺動接点材料にて作つた幅0.5mm、厚
さ0.15mmの刷子板材を長さ10mmに切断の上図示の
如くこの刷子板材２を１枚保持して成る刷子接点
３の刷子板材２を、外周に厚さ0.2mmのAg−Cu10
重量％より成る接点片１ａを３枚有する直径10
mm、長さ６mmの小型モータの整流子１の外周に上
下相対向するように摺接させて後記の試験条件に
て整流子の回転試験を行い、刷子接点３の刷子板
材２の消耗量と接触抵抗を測定した処、後記の表
の右欄に示すような結果を得た。
試験条件
電 圧：24V
電 流：直流250ｍＡ
整流子の回転数：2000回転／分
整流子の回転時間：300時間
刷子接点の接触力：10ｇ
The present invention relates to improvements in a brush sliding contact material (hereinafter referred to as "sliding contact material") for making a brush plate material for a brush contact that slides on the outer periphery of a commutator of a small motor. Phosphor bronze (P0.01~0.5, Sn7.0~9.0, remaining Cu) has traditionally been used as a sliding contact material to make the brush plate material of the brush contact that slides on the outer periphery of the commutator of small motors. Bronze has poor wear resistance,
It has the disadvantage that abrasion powder is easily generated, and when abrasion powder is generated, noise is generated. The present invention has been made to eliminate these drawbacks, and aims to provide a phosphor bronze-based sliding contact material that has improved wear resistance and low and stable contact resistance. The sliding contact material of the present invention has P0.01 to 0.50% by weight,
It is made of a Cu alloy containing 6.5 to 9.0% by weight of Sn, a total of 0.5 to 7.0% by weight of at least one of Nb, In, and Ba, and the balance Cu. In such a sliding contact material of the present invention, P0.01~
0.50% by weight, Sn6.5-9.0% by weight, Nb, In and Ba
The reason why at least one of these lubricants is made into a Cu alloy with a total of 0.5 to 7.0% by weight and the balance Cu is that the elements Nb, In, and Ba act as lubricants and improve wear resistance. This is because wear particles are soft and can be easily removed by sliding action, resulting in low and stable contact resistance.If the total amount of at least one of Nb, In, and Ba is less than 0.5% by weight, this effect will not be achieved.
If the total amount of at least one of Nb, In, and Ba exceeds 7.0% by weight, the amount of oxides generated increases, resulting in high contact resistance and instability. In addition, by setting the contents of P and Sn within a range that does not change the composition ratio of the conventional phosphor bronze, the characteristics of the conventional alloy material can be exhibited without being impaired. Next, brush plate materials of brush contacts made of the sliding contact material according to the present invention and the conventional sliding contact material will be explained. A conventional alloy material is used as a base material, and Nb is added to it to make a sliding contact material having the composition shown in Example 1 in the table below, and in the same manner, a book with the composition shown in the left column of the table below is made. A brush plate material 2 having a width of 0.5 mm and a thickness of 0.15 mm made from a sliding contact material according to an embodiment of the invention and a conventional sliding contact material is cut into a length of 10 mm as shown in the above figure. The brush plate material 2 of the brush contact 3 is made of Ag-Cu10 with a thickness of 0.2 mm on the outer periphery.
Diameter 10 with three contact pieces 1a made of 10% by weight
A rotation test of the commutator was carried out under the test conditions described below by sliding it in sliding contact with the outer periphery of the commutator 1 of a small motor with a length of 6 mm, vertically facing each other, and the amount of wear of the brush plate material 2 of the brush contact 3 When the contact resistance was measured, the results shown in the right column of the table below were obtained. Test conditions Voltage: 24V Current: DC 250mA Commutator rotation speed: 2000 rotations/min Commutator rotation time: 300 hours Brush contact force: 10g
【表】
前記の表で明らかなように従来例の刷子接点の
刷子板材の摩耗量は、60〜80μｍであつたのに対
し、実施例の刷子接点の刷子板材の摩耗量は、35
〜45μｍで著しく減少していて耐摩耗性に優れて
いることが判る。また従来例の刷子板材では接触
抵抗が１〜7Ωであつたのに対し、実施例の刷子
板材では接触抵抗が0.7〜0.75Ωで、低く安定して
いることが判る。これはひとえに実施例の刷子板
材が摺動中含有されたNb、In、Baが潤滑剤とな
つて耐摩耗性が向上し、潤滑剤の軟らかい摩耗粉
が摺動作用により容易に除去されるからに他なら
ない。
以上詳記した通り本発明の摺動接点材料は、り
ん青銅の中にNb、In、Baの少なくとも一種が含
有されて、これら元素が摺動中、潤滑剤となり、
またこの潤滑剤は摺動作用により容易に除去され
るので、これにより作つた刷子接点の刷子板材は
耐摩耗性が向上して、ノイズが発生することが無
く、しかも摺動中の接触抵抗が低く安定するとい
う優れた効果がある。[Table] As is clear from the above table, the amount of wear of the brush plate material of the brush contact of the conventional example was 60 to 80 μm, whereas the amount of wear of the brush plate material of the brush contact of the example was 35 μm.
It can be seen that the wear resistance is significantly reduced at ~45 μm, indicating that the wear resistance is excellent. Further, while the contact resistance of the brush plate material of the conventional example was 1 to 7 Ω, the contact resistance of the brush plate material of the example was 0.7 to 0.75 Ω, which indicates that the contact resistance is low and stable. This is simply because the Nb, In, and Ba contained in the brush plate material of the example act as a lubricant during sliding, improving wear resistance, and the soft wear particles of the lubricant are easily removed by the sliding action. Nothing but. As detailed above, the sliding contact material of the present invention contains at least one of Nb, In, and Ba in phosphor bronze, and these elements act as a lubricant during sliding.
In addition, since this lubricant is easily removed during sliding motion, the brush plate material of brush contacts made using this lubricant has improved wear resistance, does not generate noise, and has low contact resistance during sliding motion. It has the excellent effect of being low and stable.
図は小型モータの整流子と刷子接点の接触状態
を示す斜視図である。
１……整流子、１ａ……接点片、２……刷子板
材、３……刷子接点。
The figure is a perspective view showing the state of contact between the commutator and brush contacts of a small motor. 1...Commutator, 1a...Contact piece, 2...Brush plate material, 3...Brush contact.
Claims (1)
In及びBaの少なくとも一種を合計で0.5〜7.0重量
％及び残部CuのCu合金であることを特徴とする
刷子用摺動接点材料。1 P0.01-0.50% by weight, Sn6.5-9.0% by weight, Nb,
A sliding contact material for a brush, characterized in that it is a Cu alloy containing at least one of In and Ba in a total of 0.5 to 7.0% by weight and the balance being Cu.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21127081A JPS58112288A (en) | 1981-12-25 | 1981-12-25 | Slide contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21127081A JPS58112288A (en) | 1981-12-25 | 1981-12-25 | Slide contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58112288A JPS58112288A (en) | 1983-07-04 |
| JPH0250181B2 true JPH0250181B2 (en) | 1990-11-01 |
Family
ID=16603131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21127081A Granted JPS58112288A (en) | 1981-12-25 | 1981-12-25 | Slide contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58112288A (en) |
-
1981
- 1981-12-25 JP JP21127081A patent/JPS58112288A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58112288A (en) | 1983-07-04 |