JP5992625B2 - Contact - Google Patents
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- JP5992625B2 JP5992625B2 JP2015530589A JP2015530589A JP5992625B2 JP 5992625 B2 JP5992625 B2 JP 5992625B2 JP 2015530589 A JP2015530589 A JP 2015530589A JP 2015530589 A JP2015530589 A JP 2015530589A JP 5992625 B2 JP5992625 B2 JP 5992625B2
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
- H01H11/041—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion
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- 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
- H01H1/0231—Composite material having a noble metal as the basic material provided with a solder layer
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- 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
- H01H1/0237—Composite material having a noble metal as the basic material and containing oxides
- H01H1/02372—Composite material having a noble metal as the basic material and containing oxides containing as major components one or more oxides of the following elements only: Cd, Sn, Zn, In, Bi, Sb or Te
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- 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
- H01H1/025—Composite material having copper as the basic material
Description
本発明は、ブレーカやマグネットスイッチ等の有接点制御機器に用いることができる電気接点および接触子に関する。 The present invention relates to an electrical contact and a contact that can be used in a contact control device such as a breaker or a magnet switch.
マグネットスイッチ等の開閉機器において、機器の長寿命化を実現するためには電気接点材料自体の耐消耗性能を向上させ、長寿命化させることが一番の近道であり、電気接点材料自体の耐消耗性能の向上に関する様々な研究開発が行われている。 In switching devices such as magnet switches, in order to achieve a long service life, improving the wear resistance performance of the electrical contact material itself and extending the service life is the fastest shortcut. Various research and development related to improvement of wear performance are being conducted.
その中でも、特にマグネットスイッチやリレー等のように開閉頻度が高く、その使用条件から長寿命化が強く求められる場合においては、電気接点材料と接触子の台材の接合方法と、その接合状態の良否が電気接点材料自体の寿命に大きな影響を与えることが知られている。 Among them, especially in cases where switching frequency is high, such as magnet switches and relays, and long life is strongly demanded from the usage conditions, the method of joining the electrical contact material and the contact base, and It is known that pass / fail greatly affects the life of the electrical contact material itself.
しかしながら近年、マグネットスイッチやリレー等の開閉機器においては、機器の小型化が進むとともに、コストダウンの要請から使用される貴金属量の削減を目的として、電気接点の形状自体を小さく設計する傾向にあり、かえって電気接点材料の使用状況が過酷となり、電気接点の寿命を短くしてしまう状況になっているのが現状である。 However, in recent years, in switchgear devices such as magnet switches and relays, the size of the devices has been reduced, and the shape of the electrical contact itself tends to be designed to be small for the purpose of reducing the amount of precious metals used due to the demand for cost reduction. However, the current situation is that the usage of the electrical contact material becomes severe and the life of the electrical contact is shortened.
このような状況から、電気接点材料に対しては従来以上に長寿命化が求められており、耐消耗性能の向上が期待されるが、それを実現するのが困難な状況にある。 Under these circumstances, the electrical contact material is required to have a longer life than before, and an improvement in wear resistance is expected, but it is difficult to achieve this.
さらに、開極状態の電気接点対を閉極する際、電気接点間で非常に速く微細に機械的振動が起こり、微小ギャップにアークが間欠的に発生する、チャタリング現象が起こる場合がある。 Furthermore, when closing an open electrical contact pair, there may be a chattering phenomenon in which mechanical vibration occurs between electrical contacts very quickly and finely, and an arc is intermittently generated in a minute gap.
このチャタリング現象が発生すると、電気接点間のアーク発生数が増大するため、電気接点材料の消耗量が増加してしまう問題がある。また、チャタリングの継続時間が長い場合は、電気接点材料が溶着しやすくなるため、このチャタリングの継続時間をできる限り短くすることが望まれている。 When this chattering phenomenon occurs, the number of arcs generated between the electrical contacts increases, resulting in an increase in the amount of consumption of the electrical contact material. Further, when the chattering duration is long, the electrical contact material is likely to be welded. Therefore, it is desired to shorten the chattering duration as much as possible.
ここで、本発明が対象としている課題とその解決方法について、電気接点および接触子の構成と、その消耗形態に関する説明を通して解説する。 Here, the problem to which the present invention is directed and the solution thereof will be described through the explanation of the configuration of the electrical contacts and contacts and the consumption mode.
マグネットスイッチやリレー等の開閉機器に用いられる電気接点の構成で一般的に用いられるものとして、Ａｇ−ＳｎＯ2−Ｉｎ2Ｏ3等の銀酸化物系電気接点材料の片面に純銀を張り合わせ、その純銀面を接触子の台材との接合面に用いるものがある(例えば、特許文献１)。Generally used in the construction of electrical contacts used in switching devices such as magnet switches and relays, pure silver is bonded to one side of a silver oxide-based electrical contact material such as Ag—SnO 2 —In 2 O 3 , There is one that uses a pure silver surface as a joint surface with a base material of a contact (for example, Patent Document 1).
電気接点材料の片面に純銀を張り合わせるのは、銀酸化物系電気接点材料を直接接触子の台材に接合すると、銀酸化物系電気接点材料自体が溶着しにくいように作られているため、台材との接合界面において機械的強度が得られないためである。 The reason why pure silver is laminated on one side of the electrical contact material is that when the silver oxide electrical contact material is directly joined to the base of the contactor, the silver oxide electrical contact material itself is made difficult to weld. This is because the mechanical strength cannot be obtained at the bonding interface with the base material.
しかし、純銀層を張り合わせ、純銀層の面を接触子の台材との接合面に用いて接触子の台材と接合した場合においても、その純銀層が電気的寿命試験における開閉回数を重ねていくと、剥離消耗の起点となる場合があり、結果として接点消耗の増加につながってしまうことがある。 However, even when a pure silver layer is bonded together and the surface of the pure silver layer is used as a joint surface with the contact base material and joined to the contact base material, the pure silver layer repeats the opening and closing times in the electrical life test. As a result, it may become a starting point of peeling wear, and as a result, contact wear may increase.
このような剥離消耗を防ぐために、従来技術では、接点開閉時に発生するアークを、アークホーン等で誘導することで電気接点材料や接触子の台材の消耗を防いだり、あるいは、アークが駆動する方向の接点端部において、接触子の台材の凸部分を設けることで、電気接点が溶融しにくくしたりする工夫が知られている(例えば、特許文献２)。 In order to prevent such delamination wear, in the prior art, the arc generated at the time of opening and closing the contact is induced by an arc horn or the like to prevent wear of the electrical contact material and the contact base material, or the arc is driven. There is known a device that makes it difficult for an electrical contact to melt by providing a convex portion of a base material of a contact at a contact end in a direction (for example, Patent Document 2).
しかしながら、これらの方法は消弧室のスペースが十分に確保できる場合や、接触子の台材のボリュームが十分に確保できる場合にのみ実現可能な方法であるため、機器が小型化される場合には、これらの方法が必ずしも採用できるとは限らないのが現状である。 However, these methods are feasible only when the space for the arc extinguishing chamber can be secured sufficiently, or when the volume of the base material of the contactor can be secured sufficiently. Currently, these methods are not always applicable.
そこで本発明は、電気接点の消耗形態の中で、特に、電気接点材料と接触子の台材の接合部近傍の剥離消耗に着目し、剥離消耗が進行しやすい電気接点材料の片面の純銀層の面に、導電性、熱伝導性、及び銀との接合強度に優れた銅もしくは銅合金からなる機能層を張り合わせ、その機能層に、電気接点材料が電気的開閉にさらされたときに生じる熱を接触子の台材に伝達する機能や、電気接点材料と接触子の台材との接合強度を維持することで剥離消耗などを防ぐ機能を請け負わせることで、電気接点材料の消耗量を軽減させ、耐消耗性能を向上させることを可能とした電気接点および接触子を提供するものである。 Therefore, the present invention focuses on the depletion consumption in the vicinity of the joint between the contact material of the electrical contact material and the contact member among the consumption forms of the electrical contact, and the pure silver layer on one side of the electrical contact material in which the delamination consumption easily proceeds. Occurred when a functional layer made of copper or copper alloy with excellent electrical conductivity, thermal conductivity, and bonding strength with silver is laminated on the surface, and the electrical contact material is exposed to electrical switching on the functional layer The amount of electrical contact material consumed can be reduced by undertaking a function to transfer heat to the contact base material and a function to prevent peeling wear by maintaining the bonding strength between the electrical contact material and the contact base material. It is an object of the present invention to provide an electrical contact and a contact that can be reduced and improve wear resistance.
開閉頻度が高いために機械的強度が要求される接触子の台材に使用される銅合金は、電気接点材料の銀面と接触子の台材との接合時に、接触子の台材が銅のものと比べて接合強度が落ちる。 The copper alloy used for the base material of the contact that requires high mechanical strength due to the high switching frequency is that the contact base is made of copper when the silver surface of the electrical contact material is joined to the base of the contact. The bonding strength is lower than that of
そこで、本発明の一例として、銅系である接触子の台材と同系の銅を機能層に用いる構造とすることにより、電気接点および接触子の台材との接合強度は維持しつつ、接触子の台材の機械的強度も維持することが可能となる。 Therefore, as an example of the present invention, by using a copper-based contact base material that is the same type of copper as the functional layer, the contact strength while maintaining the bonding strength between the electrical contact and the contact base material is maintained. The mechanical strength of the child base material can be maintained.
さらに、電気接点材料を従来よりも薄くする代わりに機能層を厚くし、かつ電気接点および接触子の台材よりも軟らかい銅もしくは銅合金を機能層に用いて電気接点を構成することにより、チャタリング時の衝撃を機能層に吸収させてチャタリング継続時間を短くし、電気接点の消耗量を軽減させることを可能とした電気接点および接触子を提供するものである。 Furthermore, instead of making the electrical contact material thinner than in the past, the functional layer is made thicker, and the electrical contact is configured using copper or a copper alloy that is softer than the base material of the electrical contact and the contactor for the functional layer. It is an object of the present invention to provide an electrical contact and a contact that can absorb the impact of time in a functional layer to shorten chattering duration and reduce the amount of consumption of the electrical contact.
そこで、本発明の一例として、機能層には軟らかい銅を、機械的強度が要求される接触子の台材には硬い銅を配置することにより、チャタリング継続時間を短縮することも可能となる。 Therefore, as an example of the present invention, the chattering duration time can be shortened by arranging soft copper for the functional layer and hard copper for the base material of the contact that requires mechanical strength.
本発明の電気接点および接触子によると、剥離消耗が進行しやすい電気接点の片面の純銀層の面に、導電性、熱伝導性、銀との接合強度に優れた銅もしくは銅合金からなる機能層を張り合わせ、その銅もしくは銅合金の層に、電気接点が電気的開閉にさらされたときに生じる熱を台材に伝達する機能、チャタリング継続時間を短くする機能や接触子の台材との接合強度を維持することで剥離消耗などを防ぐ機能を請け負わすことにより、電気接点の消耗量を軽減させることが可能になった。 According to the electrical contact and contactor of the present invention, the function of the copper or copper alloy having excellent conductivity, thermal conductivity, and bonding strength with silver on the surface of the pure silver layer on one side of the electrical contact that is likely to undergo delamination. Layers are bonded together, and the copper or copper alloy layer has a function to transfer heat generated when the electrical contacts are exposed to electrical switching to the base, a function to shorten chattering duration, and a contact base. It is possible to reduce the consumption of electrical contacts by undertaking a function to prevent delamination wear by maintaining the bonding strength.
このようにして得られた電気接点および接触子は、電気的寿命試験を実施した際に、従来の電気接点と比較して耐消耗性能を最大で約２０％向上することが可能となった。 The electrical contacts and contacts thus obtained were able to improve the wear resistance performance by up to about 20% compared to conventional electrical contacts when an electrical life test was performed.
また、従来技術では、使用される貴金属量の削減を目的として電気接点材料の厚み等の形状を小さく設計し直すたびに接触子間のギャップが変わるため、接触子の台材の重量や寸法等の変更をする必要があり、これにより開閉機器自体の設計変更も要する問題があった。 In addition, with the prior art, the gap between the contacts changes each time the shape of the electrical contact material, such as the thickness, is redesigned to reduce the amount of precious metal used. Therefore, there has been a problem that the design of the switchgear itself needs to be changed.
しかし、本発明の機能層を有する電気接点を用いることで、電気接点の厚みは変えずに電気接点材料の厚みを小さくすることができるため、接触子間のギャップに変化がなく、開閉機器自体を設計変更する必要がない。これにより、各種仕様変更のコストが低減され、安価な開閉機器が提供することが可能となった。 However, since the thickness of the electrical contact material can be reduced without changing the thickness of the electrical contact by using the electrical contact having the functional layer of the present invention, the gap between the contacts is not changed, and the switching device itself There is no need to change the design. As a result, the cost of changing various specifications is reduced, and an inexpensive switchgear can be provided.
また、本発明の機能層を有する電気接点は、どのような形状や銅系材質の接触子の台材にも適用可能である。 Moreover, the electrical contact having the functional layer of the present invention can be applied to a base material for a contact of any shape and copper-based material.
１ 電気接点材料
２ 純銀層
３ 機能層
４ 電気接点
５ 接触子の台材
６ リベット形状の台材DESCRIPTION OF SYMBOLS 1
本発明の実施例および従来例を表１に示し、これらの電気接点材料１の加工工程を説明する。なお、実施例および比較例は電気接点種類Ｎｏ．で区別し、各電気接点の純銀層が占める割合(%)および機能層が占める割合(％)、各電気接点のＡＣ３級試験（ＪＩＳ Ｃ ８２０１−３およびＪＩＳ Ｃ ８２０１−４−１による）後の消耗量(％)を表１に記載する。 Examples of the present invention and conventional examples are shown in Table 1, and the processing steps of these electrical contact materials 1 will be described. In the examples and comparative examples, the electrical contact type No. The percentage of pure silver layer of each electrical contact and the percentage of functional layer (%), after AC3 class test of each electrical contact (according to JIS C 8201-3 and JIS C 8201-4-1) The amount of consumption (%) is shown in Table 1.
組成が質量％で９１Ａｇ−５．８Ｓｎ−３Ｉｎ−０．２Ｎｉである銀合金材料を溶解法で作製し、圧延、焼鈍を繰り返して所望の板を得る。なお、本発明では、電気接点材料として用いられるＡｇ−Ｎｉ系合金やＡｇ−Ｗ系合金等の銀合金、あるいは後工程で内部酸化処理を施して銀酸化物系電気接点材料とするものであれば、どのような銀合金材料を用いても良い。 A silver alloy material having a composition of 91 Ag-5.8Sn-3In-0.2Ni in mass% is produced by a melting method, and rolling and annealing are repeated to obtain a desired plate. In the present invention, a silver alloy such as an Ag—Ni alloy or an Ag—W alloy used as an electrical contact material, or a silver oxide electrical contact material that is subjected to an internal oxidation treatment in a subsequent process. Any silver alloy material may be used.
その板の片面に純銀層２となる電気接点総厚の３〜３０％の厚さの純銀板を複合した複合材料とする。なお、本発明では、純銀層２が電気接点層厚の３％未満であると、機能層との接合強度が好ましくなく、電気接点層厚の３０％を超えると純銀層を厚くしたわりに接合強度に顕著な効果が見られず、貴金属使用量が増えて材料価格が高くなり、好ましくない。
A composite material is formed by combining a pure silver plate having a thickness of 3 to 30% of the total thickness of the electrical contact to be the
この複合材料から、プレス打ち抜き加工により、１０ｍｍ角の四角形状の複合材料を得る。こうして得られた１０ｍｍ角の複合材料について、バレル研磨、内部酸化処理を施し、機能層３となる１０ｍｍ角かつ電気接点総厚の１〜５０％の無酸素Ｃｕ（ビッカース硬さ７４）と接合して電気接点４とした。なお、本発明では、機能層３が電気接点層厚の１％未満であると、接触子の台材との接合強度やチャタリング継続時間短縮の効果が顕著に見られず、電気接点層厚の５０％を超えると機能層を厚くした代わりに電気接点材料が薄くなるため、電気接点材料自体の寿命が短くなって好ましくない。また、機能層３に用いる銅もしくは銅合金は、銀酸化物系の電気接点材料１および接触子の台材５よりも軟らかければどのような銅もしくは銅合金でもよい。
From this composite material, a 10 mm square rectangular composite material is obtained by press punching. The 10 mm square composite material thus obtained is subjected to barrel polishing and internal oxidation treatment, and joined to oxygen free Cu (Vickers hardness 74) of 10 mm square and 1 to 50% of the total thickness of the electrical contact to become the
このようにして得られた電気接点４を、無酸素Ｃｕ（ビッカース硬さ１１０）からなる接触子の台材５とろう付け接合して接触子（図１）とした(電気接点種類Ｎｏ．１〜５)。
The
機能層３および接触子の台材５を９７Ｃｕ−２．６Ｆｅ−０．１５Ｐ−０．２５ＺｎからなるＣｕ合金に置き換えた以外は実施例１と同様にし、接触子（図１）とした（電気接点種類Ｎｏ．６〜１０)。なお、機能層のビッカース硬さは９４、接触子の台材のビッカース硬さは１４０であった。
A contact (FIG. 1) was obtained in the same manner as in Example 1 except that the
実施例１と同様の方法で得た複合材料から、プレス打ち抜き加工により、１０ｍｍφの円板状の複合材料を得る。 From the composite material obtained in the same manner as in Example 1, a 10 mmφ disk-shaped composite material is obtained by press punching.
こうして得られた１０ｍｍφの複合材料について、バレル研磨、内部酸化処理を施し、機能層３となる１０ｍｍφでかつ電気接点総厚の１〜５０％の無酸素Ｃｕ（ビッカース硬さ７４）からなる円板を複合材料と接合した後、無酸素Ｃｕ（ビッカース硬さ１１０）からなるリベット形状の台材６とろう付け接合して電気接点（図２）とした。
The 10 mmφ composite material thus obtained is subjected to barrel polishing and internal oxidation treatment, and is made of oxygen-free Cu (Vickers hardness 74) of 10 mmφ to be the
このようにした電気接点４を、リベット形状の台材６を無酸素Ｃｕ（ビッカース硬さ１１０）からなる接触子の台材５とかしめ接合して接触子（図３）とした（電気接点種類Ｎｏ.１１〜１５）。
The
機能層３、リベット形状の台材６および接触子の台材５を９７Ｃｕ−２．６Ｆｅ−０．１５Ｐ−０．２５ＺｎからなるＣｕ合金に置き換えた以外は実施例３と同様にし、接触子（図３）とした（電気接点種類Ｎｏ．１６〜２０)。なお、機能層のビッカース硬さは９４、リベット形状の台材および接触子の台材のビッカース硬さは１４０であった。
In the same manner as in Example 3, except that the
従来例１
実施例１と同様の方法で得た複合材料から、プレス打ち抜き加工により、１０ｍｍ角の四角形状の複合材料を得る。こうして得られた複合材料について、バレル研磨、内部酸化処理を施して電気接点とした後、無酸素Ｃｕ（ビッカース硬さ１１０）からなる接触子の台材とろう付け接合して、機能層の有無以外は実施例１と同様の接触子を作製した(電気接点種類Ｎｏ.２１〜２２)。Conventional Example 1
From the composite material obtained in the same manner as in Example 1, a 10 mm square rectangular composite material is obtained by press punching. The composite material thus obtained is subjected to barrel polishing and internal oxidation treatment to form an electrical contact, and then brazed to a contact base made of oxygen-free Cu (Vickers hardness 110), and the presence or absence of a functional layer. Except for the above, contacts similar to Example 1 were produced (electrical contact types No. 21 to 22).
従来例２
実施例１と同様の方法で得た複合材料から、プレス打ち抜き加工により、１０ｍｍ角の四角形状の複合材料を得る。こうして得られた複合材料について、バレル研磨、内部酸化処理を施して電気接点とした後、９７Ｃｕ−２．６Ｆｅ−０．１５Ｐ−０．２５ＺｎのＣｕ合金（ビッカース硬さ１４０）からなる接触子の台材とろう付け接合して、機能層の有無以外は実施例２と同様の接触子を作製した(電気接点種類Ｎｏ.２３〜２４)。Conventional example 2
From the composite material obtained in the same manner as in Example 1, a 10 mm square rectangular composite material is obtained by press punching. The composite material thus obtained was subjected to barrel polishing and internal oxidation treatment to form an electrical contact, and then a contact made of a Cu alloy of 97Cu-2.6Fe-0.15P-0.25Zn (Vickers hardness 140). The same contact as Example 2 was produced except for the presence or absence of a functional layer by brazing to a base material (electrical contact types No. 23 to 24).
従来例３
実施例１と同様の方法で得た複合材料から、プレス打ち抜き加工により、１０ｍｍφの円板状の複合材料を得る。こうして得られた複合材料について、バレル研磨、内部酸化処理を施して電気接点とした後、無酸素Ｃｕからなるリベット形状の台材（ビッカース硬さ１１０）とろう付け接合し、無酸素Ｃｕからなる接触子の台材（ビッカース硬さ１１０）とかしめ接合して、機能層の有無以外は実施例３と同様の接触子を作製した(電気接点種類Ｎｏ.２５〜２６)。Conventional example 3
From the composite material obtained in the same manner as in Example 1, a 10 mmφ disk-shaped composite material is obtained by press punching. The composite material thus obtained is subjected to barrel polishing and internal oxidation treatment to form an electrical contact, and then brazed to a rivet-shaped base material (Vickers hardness 110) made of oxygen-free Cu and made of oxygen-free Cu. A contact was made by caulking with a contact base (Vickers hardness 110) to produce a contact similar to that of Example 3 except for the presence or absence of a functional layer (electric contact type Nos. 25 to 26).
従来例４
実施例１と同様の方法で得た複合材料から、プレス打ち抜き加工により、１０ｍｍφの円板状の複合材料を得る。こうして得られた複合材料について、バレル研磨、内部酸化処理を施して電気接点とした後、９７Ｃｕ−２．６Ｆｅ−０．１５Ｐ−０．２５ＺｎのＣｕ合金（ビッカース硬さ１４０）からなるリベット形状の台材とろう付け接合し、９７Ｃｕ−２．６Ｆｅ−０．１５Ｐ−０．２５Ｚｎの接触子の台材（ビッカース硬さ１４０）とかしめ接合して、機能層の有無以外は実施例４と同様の接触子を作製した(電気接点種類Ｎｏ.２７〜２８)。Conventional example 4
From the composite material obtained in the same manner as in Example 1, a 10 mmφ disk-shaped composite material is obtained by press punching. The composite material thus obtained was barrel-polished and subjected to internal oxidation treatment to make an electrical contact, and then a rivet shape made of a Cu alloy of 97Cu-2.6Fe-0.15P-0.25Zn (Vickers hardness 140). Example 4 except for the presence or absence of a functional layer by brazing and joining with a base material (Vickers hardness 140) of 97 Cu-2.6Fe-0.15P-0.25Zn. (Contact type Nos. 27 to 28).
上記の実施例１〜４と従来例１〜４によって作製された接触子を定格８０Ａのマグネットスイッチに実装し、耐消耗性能について実機評価を行った結果を表１に示す。なお、実機評価の条件については、ＪＩＳ Ｃ ８２０１に定めるところのＡＣ３級試験（４４０Ｖ、８０Ａ）を行うものとし、開閉回数については１００万回まで実施するものとした。 Table 1 shows the results obtained by mounting the contacts produced in Examples 1 to 4 and Conventional Examples 1 to 4 on a magnet switch having a rating of 80 A and performing an actual machine evaluation on wear resistance. In addition, about the conditions of actual machine evaluation, the AC3 class test (440V, 80A) as defined in JIS C8201 shall be performed, and the number of opening and closing shall be one million times.
消耗量については、ＡＣ３級試験前後の接触子の重量変化を測定し、ＡＣ３級試験後の質量がＡＣ３級試験前からどの程度減少しているかを１００分率で示した。
As for the amount of wear, the change in the weight of the contact before and after the
この結果、実施例１〜４においては、従来例１〜４と比較して、電気接点の消耗量が約１０〜２０％軽減することが確認され、電気接点の耐消耗性能が向上することが実証された。 As a result, in Examples 1 to 4, it was confirmed that the amount of consumption of the electrical contacts was reduced by about 10 to 20% compared to Conventional Examples 1 to 4, and the wear resistance performance of the electrical contacts was improved. Proven.
また、実施例１の接触子の台材５のみを９７Ｃｕ−２．６Ｆｅ−０．１５Ｐ−０．２５ＺｎのＣｕ合金（ビッカース硬さ１４０）に置き換えて同様の試験を行ったが、消耗量は実施例１と同等であった。
A similar test was conducted by replacing only the
また、実施例３のリベット形状の台材６および接触子の台材５を９７Ｃｕ−２．６Ｆｅ−０．１５Ｐ−０．２５ＺｎのＣｕ合金（ビッカース硬さ１４０）に置き換えて同様の試験を行ったが、消耗量は実施例３と同等であった。
A similar test was performed by replacing the rivet-shaped
Claims (1)
電気接点を、銀合金からなる電気接点材料の片面に純銀の層を形成し、この純銀の層に銅もしくは銅合金からなる機能層を張り合わせて多層構造とし、その機能層をリベット形状とした台材に接合すると共に機能層の硬さをリベット形状の台材の硬さよりも柔らかくして構成し、この電気接点をリベット形状の台材により接触子の台材に接合したことを特徴とする接触子。 In a contact constructed by joining electrical contacts to a contact base,
An electrical contact is formed by forming a layer of pure silver on one side of an electrical contact material made of a silver alloy, and laminating a functional layer made of copper or a copper alloy on the pure silver layer to form a multilayer structure, and the functional layer is a rivet-shaped base. The contact is characterized in that the functional layer is made harder than the rivet-shaped base material and the electrical contact is joined to the contact base material by the rivet-shaped base material. Child.
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| Application Number | Priority Date | Filing Date | Title |
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| PCT/JP2013/071286 WO2015019424A1 (en) | 2013-08-06 | 2013-08-06 | Electric contact point and contact element |
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| KR102313183B1 (en) * | 2017-03-08 | 2021-10-14 | 엘에스오토모티브테크놀로지스 주식회사 | Micro-switch for power window switch unit and power window switch unit for vehicle having the same |
| WO2020110295A1 (en) * | 2018-11-30 | 2020-06-04 | 三菱電機株式会社 | Electric contactor and method of manufacturing same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5885224A (en) * | 1981-11-16 | 1983-05-21 | 株式会社安川電機 | Lead switch |
| JPH02179369A (en) * | 1988-12-29 | 1990-07-12 | Tokuriki Honten Co Ltd | Ag-oxide composite contact material and its manufacture |
| JPH03110724A (en) * | 1989-09-25 | 1991-05-10 | Tokuriki Honten Co Ltd | Complex material for electrical contact |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE10318223A1 (en) * | 2003-04-22 | 2004-12-02 | Louis Renner Gmbh | Contact piece made of tungsten with a corrosion-inhibiting layer of base metal |
| JP4728571B2 (en) * | 2003-10-31 | 2011-07-20 | 古河電気工業株式会社 | Manufacturing method of silver-coated stainless steel strip for movable contacts |
| CN101562081B (en) * | 2008-04-18 | 2012-03-21 | 佛山通宝精密合金股份有限公司 | Preparation method of silver-saving laminating composite contact terminal piece |
-
2013
- 2013-08-06 CN CN201380078806.6A patent/CN105453206B/en active Active
- 2013-08-06 JP JP2015530589A patent/JP5992625B2/en active Active
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5885224A (en) * | 1981-11-16 | 1983-05-21 | 株式会社安川電機 | Lead switch |
| JPH02179369A (en) * | 1988-12-29 | 1990-07-12 | Tokuriki Honten Co Ltd | Ag-oxide composite contact material and its manufacture |
| JPH03110724A (en) * | 1989-09-25 | 1991-05-10 | Tokuriki Honten Co Ltd | Complex material for electrical contact |
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| WO2015019424A1 (en) | 2015-02-12 |
| CN105453206A (en) | 2016-03-30 |
| CN105453206B (en) | 2018-07-10 |
| JPWO2015019424A1 (en) | 2017-03-02 |
| KR20160040585A (en) | 2016-04-14 |
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