JPS58110634A - Sliding contact material - Google Patents

Abstract

PURPOSE:To enhance the hardness and wear resistance of an Ag-Sn alloy with superior sulfurization resistance as a sliding contact material by adding a specified among of >=1 kinds among Te, Sr, Ti, Zr and Mn to the alloy or by further adding an Fe group metal. CONSTITUTION:A material for the contact chips 1a of the commutator 1 of a small-sized motor is obtd. by adding 0.1-3wt% t least one among Te, Sr, Ti, Zr and Mn to an Ag-Sn alloy contg. 1-10wt% Sn. To said composition may be added 0.01-0.5wt% Fe group metall. A precipitate of an intermetallic compound of the added metal with Sn is dispersed in the solid soln. of Ag and Sn with superior sulfurization resistance to enhance the hardness and wear resistance. By adding the Fe group metal, the grains are made fine to further enhance the wear resistance.

Description

【発明の詳細な説明】 本発明は、摺動接点材料の改良に関する。[Detailed description of the invention] The present invention relates to improvements in sliding contact materials.

従来よシ摺動接点材料の一つとして耐硫化性の優れたＡ
　ｇ　−８ｎ合金が用いられてきたが、Ａｇ−８ｎ合金
は硬さが低く耐摩耗性に劣るので、こｑ）　Ａ　ｇ　−
Ｓ　ｍ合金で小屋モータの整流子の外周の接点片を製作
して使用した場合には刷子接点との接触によ）摩耗物が
生じ、ノイズ発生の厘因となっていた。A with excellent sulfidation resistance as one of the conventional sliding contact materials
g -8n alloy has been used, but since Ag-8n alloy has low hardness and poor wear resistance,
When the contact piece on the outer periphery of the commutator of a shed motor is made of Sm alloy and used, abrasion particles are generated due to contact with the brush contact, which causes noise generation.

本発明はかかる欠点を解消すべくなされたものであ、９
、Ａｇ−Ｓｎ合金の硬さを高め耐摩耗性を向上させると
共に酸化を抑制し接触抵抗を低く安定させた摺動接点材
料を提供せんとするものである。The present invention has been made to eliminate such drawbacks.
, it is an object of the present invention to provide a sliding contact material in which the hardness of an Ag-Sn alloy is increased, the wear resistance is improved, oxidation is suppressed, and the contact resistance is kept low and stable.

本発明の摺動接点材料の一つは、Ａｇ中に、Ｓｎ１〜１
０重量％とＴｅ、Ｓｒ、Ｔｉ、Ｚｒ、Ｍｎ　Ｏ少くとも
一種を合計で０．１〜３重量％添加して成るものである
。One of the sliding contact materials of the present invention contains 1 to 1 Sn in Ag.
0% by weight and at least one of Te, Sr, Ti, Zr, and MnO are added in a total amount of 0.1 to 3% by weight.

また本発明の摺動接点材料の他の一つは、Ａ　ｇ中に８
ｎｌ〜１０重量−とＴｅ、Ｓｒ、’ｌ”ｉ、Ｚｒ。In addition, another one of the sliding contact materials of the present invention has 8 in A g.
nl ~ 10 wt- and Te, Sr, 'l''i, Zr.

Ｍｎの少くとも一種を合計で０．１〜３重量−と、Ｆｅ
族０．０１〜０．５重量％添加して成るものである。A total of 0.1 to 3% of at least one type of Mn and Fe
It is made by adding 0.01 to 0.5% by weight of the group members.

かかる本発明の摺動接点材料に於いて、Ａｇ中に１〜１
０重量−のａｎを添加するのは、Ａｇの耐硫化性を向上
させる為で、１重量−未満ではその効果が現われず、１
０重量−を超えると酸化物の生成量が多くなシ接触抵抗
が高く不安定になるものである。またＴｅ、Ｓｒ、Ｔｉ
、Ｚｒ、Ｍｎ　Ｏ少くとも一種を合計でα１〜３重量％
添加するのは、Ａｇとａｎの固溶体の倫に前記元素とＳ
ｎとの金属間化合物の析出物を分散させて、Ａｇ−８ｎ
。In the sliding contact material of the present invention, 1 to 1
The reason why 0 weight of an is added is to improve the sulfidation resistance of Ag, and if it is less than 1 weight, the effect will not appear.
If it exceeds 0 weight, a large amount of oxides will be produced, resulting in high contact resistance and instability. Also Te, Sr, Ti
, Zr, MnO at least one type in total α1-3% by weight
The above elements and S are added to the solid solution mixture of Ag and an.
By dispersing the precipitates of intermetallic compounds with Ag-8n
.

硬さを高め耐摩耗性を向上させる為で、０．１重量饅未
満ではＳｎとの金属間化合物の析出物が少なく分散が不
十分でＡ　ｇ　−８ｎの硬さを高めることができなく、
耐摩耗性が向上せず、３１ｔ＊を超えるとＡｇとの金属
間化合物の析出粒子が多く且つ大きくなシ、その粒子が
讃化して接触抵抗が高く不安定になるものである。さら
にＦｅ族を０，０１は結晶粒が微細化できず、０．５重
量−を超えると合金せず、Ａｌｌ中に単体で大ｔ１な塊
）として析出し、接触抵抗が高く且つばらつきが大きく
不安定となるものである。The purpose is to increase hardness and improve wear resistance, and if the weight is less than 0.1%, there will be few precipitates of intermetallic compounds with Sn, and dispersion will be insufficient, making it impossible to increase the hardness of A g -8n.
The wear resistance does not improve, and if it exceeds 31 t*, there are many and large particles of intermetallic compounds with Ag, and the particles become abrasive, resulting in high contact resistance and instability. Furthermore, if the Fe group is 0.01, the crystal grains cannot be refined, and if it exceeds 0.5 weight, it will not alloy and will precipitate as a single large t1 lump in the Al, resulting in high contact resistance and large variations. This is unstable.

次に本発＠による摺動接点材料と従来の摺動接点材料に
て作りた小型モータの整流子の接点片について説明する
。Next, a contact piece for a commutator of a small motor made using a sliding contact material according to the present invention and a conventional sliding contact material will be explained.

後記の表の右１１１に示す成分組成の本発明の実施て、
図面に示す如く直径６　Ｍ　、長さ９ｕの整流子ｌの外
１！！ＩＫ厚さ０．２　ｍの接点片１硫が形成され、こ
の接点片１ａの外周面の上下に、Ａｕ−Ａｇ−Ｃｕ−ｐ
ｔ　　ヨシ族る直径０．２５　ｗ　、長さ１０＋ｗの３
本の刷子線材２を有する刷子接点３を相対向するように
摺接させて、後記の試験条件にて整流子ｌの回転試験を
行い、接点片１ａの摩耗量と整流子ｌの回転数のばらつ
きを測定した処、後記の表の右欄に示すような結果を得
た。Implementation of the present invention with the component composition shown in 111 on the right of the table below,
As shown in the drawing, the outer part of the commutator l has a diameter of 6 M and a length of 9 u! ! A contact piece 1 sulfur having an IK thickness of 0.2 m is formed, and Au-Ag-Cu-p is applied above and below the outer peripheral surface of this contact piece 1a.
t reed diameter 0.25w, length 10+w 3
A rotation test of the commutator l was performed under the test conditions described below by sliding the brush contacts 3 having the brush wire 2 so as to face each other, and the wear amount of the contact piece 1a and the rotation speed of the commutator l were measured. When the dispersion was measured, the results shown in the right column of the table below were obtained.

試験条件 電　　　圧　　：　　１２Ｖ 電　　　流　　：　　　ＤＣ５ＱｍＡ 整流子の回転数　：　　２８ＵＯｒｐｔｎ整流子の回転
時間：　　ＳＯＯ時間 刷子接点の接触カニ　　５Ｆ／３本 耗量は３〜６μであったのに対し、実施例の１１点片の
摩耗量は２〜３μで着しく減少していて耐摩耗性に優れ
ていることが判る。また従来例の接点片を有する整流子
の回転数のばらつきは８〜１１−であったのに対し、実
施例の接点片を有する整流子の回転数のばらつきは３〜
４％で著しく減少していることが判る。Test conditions Voltage: 12V Current: DC5QmA Commutator rotation speed: 28UOrptn Commutator rotation time: SOO time The contact crab 5F/3 wear amount of the brush contact was 3 to 6μ, while the It can be seen that the wear amount of the 11-point piece was significantly reduced to 2 to 3μ, indicating that it has excellent wear resistance. Furthermore, the variation in the rotational speed of the commutator with the contact piece of the conventional example was 8 to 11-1, whereas the variation of the rotational speed of the commutator with the contact piece of the example was 3 to 11.
It can be seen that there is a significant decrease at 4%.

以上詳記した通シ本発明の摺動接点材料は、硬さが高く
耐摩耗性に優れているので、これによシ作った小型モー
タの整流子の接点片は刷子接点との摺接時摩粍粉の発生
が無く、従ってノイズが発生することがなく、接触抵抗
が像く安定しているので、小型のモータの整流子の回転
数のばらつきか大幅に減少する等の優れた効果がある。The sliding contact material of the present invention described in detail above has high hardness and excellent wear resistance, so the contact piece of a commutator of a small motor made using this material can be used during sliding contact with a brush contact. There is no abrasion powder, therefore there is no noise, and the contact resistance is very stable, so it has excellent effects such as greatly reducing variations in the rotation speed of the commutator of small motors. be.

【図面の簡単な説明】[Brief explanation of the drawing]

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、ｌａ・・・・・・接点片、２・
・・・・・刷子線材、３・・・・・・刷子接点。 出願人　　田中貴金属工業株式会社The figure is a perspective view showing the state of contact between the commutator and brush contacts of a small motor. 1... Commutator, la... Contact piece, 2...
...Brush wire, 3...Brush contact. Applicant Tanaka Kikinzoku Kogyo Co., Ltd.

Claims (1)

【特許請求の範囲】 １）Ａｇ中に、５ｎｌ−１０重量％とＴｅ、Ｓｒ。 Ｔｉ、Ｚｒ、Ｍｎの少くとも一種を合計で０．１〜３重
量−添加して成る摺動接点材料。 ２）Ａｇｇ中、８ｎｌ−１０重量％とＴｅ、Ｓｒ。 Ｔｉ、Ｚｒ、Ｍｎの少くとも一種を合計で０．１〜３重
量−とＦｅ族を０．Ｏ１〜０．５重量−添加して成る摺
動接点材料。[Claims] 1) 5nl-10% by weight of Te and Sr in Ag. A sliding contact material containing at least one of Ti, Zr, and Mn added in a total amount of 0.1 to 3 weight. 2) 8nl-10% by weight and Te, Sr in Agg. A total of 0.1 to 3 weight of at least one of Ti, Zr, and Mn and 0.1 to 3 weight of Fe group. Sliding contact material made by adding O1 to 0.5 weight.