JPH0250176B2 - - Google Patents
Info
- Publication number
- JPH0250176B2 JPH0250176B2 JP21126581A JP21126581A JPH0250176B2 JP H0250176 B2 JPH0250176 B2 JP H0250176B2 JP 21126581 A JP21126581 A JP 21126581A JP 21126581 A JP21126581 A JP 21126581A JP H0250176 B2 JPH0250176 B2 JP H0250176B2
- Authority
- JP
- Japan
- Prior art keywords
- contact
- brush
- plate material
- brush plate
- commutator
- 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 28
- 229910052725 zinc Inorganic materials 0.000 claims description 8
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 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
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 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には、主として硬さ、ば
ね特性の優れたBe−Cuが用いられてきたが、Be
（1.6〜2.0重量％）−Cuでは摺動時の機械的、電気
的腐蝕により酸化物が発生する為、耐消耗性に劣
り、消耗粉が生じ易く、消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、耐消耗性に優れたBe−Cu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、Be1.5〜2.0重量％、
Mo、Se、As及びZnの少なくとも一種を合計で
0.5〜５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、Be1.5
〜2.0重量％、Mo、Se、As及びZnの少なくとも
一種を合計で0.5〜５重量％残部CuのCu合金とす
るのは、刷子接点の摺動時に発生するMo、Se、
As及びZnの少なくとも一種の酸化物が潤滑剤と
なり、前記従来のBe（1.6〜2.0重量％）−Cuの耐
消耗性が向上するからであり、また発生した
Mo、Se、As及びZnの少なくとも一種の酸化物
は軟らかい為摺動作用により容易に除去されて接
触抵抗が高く不安定になることがないからであ
り、Mo、Se、As及びZnの少なくとも一種を合
計で、0.5重量％未満では潤滑剤としての効果を
発揮できず、Mo、Se、As及びZnの少なくとも
一種を合金で５重量％を超えると酸化物の発生が
多くなり、接触抵抗が高く不安定となるものであ
る。
またBe、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。
次に本発明による摺動接点材料と従来の摺動接
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Mo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巾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−Cu重量
％より接点片１ａを３枚有する直径10mm、長さ６
mm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. Traditionally, Be-Cu, which has excellent hardness and spring characteristics, has been mainly used to make the brush plate material for the brush contacts that slide on the outer circumference of the commutator of small motors.
(1.6 to 2.0% by weight) - Cu generates oxides due to mechanical and electrical corrosion during sliding, so it has poor wear resistance and easily generates consumable powder, which causes noise. There were flaws. The present invention has been made to overcome these drawbacks, and aims to provide a Be--Cu based sliding contact material that has excellent wear resistance. The sliding contact material of the present invention has Be1.5 to 2.0% by weight,
At least one of Mo, Se, As and Zn in total
It consists of a Cu alloy of 0.5 to 5% by weight and the balance Cu. In the sliding contact material of the present invention, Be1.5
~2.0% by weight, at least one of Mo, Se, As, and Zn, and a total of 0.5 to 5% by weight, balance Cu, because Mo, Se,
This is because at least one oxide of As and Zn acts as a lubricant, improving the wear resistance of the conventional Be (1.6 to 2.0% by weight)-Cu, and
This is because the oxide of at least one of Mo, Se, As, and Zn is soft and can be easily removed by sliding action, resulting in high contact resistance and no instability. If the total amount is less than 0.5% by weight, it will not be effective as a lubricant, and if the alloy contains at least one of Mo, Se, As, and Zn in an amount exceeding 5% by weight, more oxides will be generated and the contact resistance will be high. This is unstable. Furthermore, by setting the contents of Be and Cu 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. 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 Mo 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 brush plate material 2 with a diameter of 10 mm and a length of 6.
The commutator was placed in sliding contact with the outer periphery of the commutator 1 of a small motor of mm, vertically facing each other, and a rotation test was performed on the commutator under the test conditions described below, and the wear amount and contact resistance of the brush plate material 2 of the brush contact 3 were evaluated Upon measurement, the results shown in the right column of the table below were obtained. Test conditions Voltage: 24V Current: DC 250mA Commutator rotation speed: 2000 revolutions/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
刷子板材の消耗量は50〜70μｍであつたのに対
し、実施例の刷子接点の刷子板材の消耗量は15〜
20μｍで著しく減少していて耐消耗性に優れてい
ることが判る。また従来例の刷子板材では接触抵
抗が１〜5Ωであつたのに対し、実施例の刷子板
材では接触抵抗が0.5〜0.8Ωで著しく低く安定し
ていることが判る。これはひとえに実施例の刷子
板材が摺動時に発生するMo、Se、As、Znの酸
化物の潤滑剤により耐消耗性が向上し、またこの
軟らかい酸化物が摺動作用により容易に除去され
て刷子板材の接触抵抗が低く安定するからに他な
らない。
以上詳記した通り本発明の摺動接点材料は、摺
動時に発生するMo、Se、As、Znの酸化物が潤
滑剤となり、またこの酸化物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
の刷子板材は耐消耗性が著しく向上し、消耗粉の
発生が大幅に減少し、ノイズの発生が激減し、ま
た接触抵抗が低く安定する。従つて相手方の小型
モータの整流子の回転数のばらつきも少なくなる
等の優れた効果がある。[Table] As is clear from the table above, the amount of wear of the brush plate material of the brush contact of the conventional example was 50 to 70 μm, whereas the amount of wear of the brush plate material of the brush contact of the example was 15 to 70 μm.
It can be seen that the thickness decreases significantly at 20 μm, indicating excellent wear resistance. Further, it can be seen that while the contact resistance of the conventional brush plate material was 1 to 5 Ω, the contact resistance of the brush plate material of the example was 0.5 to 0.8 Ω, which was extremely low and stable. This is because the wear resistance of the brush plate material of the example is improved by the lubricant of Mo, Se, As, and Zn oxides generated during sliding, and the soft oxides are easily removed by the sliding action. This is because the contact resistance of the brush plate material is low and stable. As detailed above, in the sliding contact material of the present invention, the oxides of Mo, Se, As, and Zn generated during sliding act as lubricants, and these oxides are easily removed by the sliding action. The brush plate material of the brush contact made by this method has significantly improved wear resistance, the generation of wasted powder is greatly reduced, the generation of noise is drastically reduced, and the contact resistance is low and stable. Therefore, there are excellent effects such as less variation in the rotational speed of the commutator of the other small motor.
図は小型モータの整流子と刷子接点との接触状
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)
なくとも一種を合計で0.5〜５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 Be 1.5 to 2.0% by weight, a total of 0.5 to 5% by weight of at least one of Mo, Se, As, and Zn, and the balance Cu
A sliding contact material for brushes characterized by being made of a Cu alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21126581A JPS58112283A (en) | 1981-12-25 | 1981-12-25 | Slide contact material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21126581A JPS58112283A (en) | 1981-12-25 | 1981-12-25 | Slide contact material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58112283A JPS58112283A (en) | 1983-07-04 |
| JPH0250176B2 true JPH0250176B2 (en) | 1990-11-01 |
Family
ID=16603046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21126581A Granted JPS58112283A (en) | 1981-12-25 | 1981-12-25 | Slide contact material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58112283A (en) |
-
1981
- 1981-12-25 JP JP21126581A patent/JPS58112283A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58112283A (en) | 1983-07-04 |