JPH0441529Y2 - - Google Patents
Info
- Publication number
- JPH0441529Y2 JPH0441529Y2 JP13658387U JP13658387U JPH0441529Y2 JP H0441529 Y2 JPH0441529 Y2 JP H0441529Y2 JP 13658387 U JP13658387 U JP 13658387U JP 13658387 U JP13658387 U JP 13658387U JP H0441529 Y2 JPH0441529 Y2 JP H0441529Y2
- Authority
- JP
- Japan
- Prior art keywords
- contact
- alloy
- base
- metal
- layer
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 31
- 239000000956 alloy Substances 0.000 claims description 18
- 229910045601 alloy Inorganic materials 0.000 claims description 18
- 239000002131 composite material Substances 0.000 claims description 18
- 229910052709 silver Inorganic materials 0.000 claims description 12
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 11
- 239000004332 silver Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 claims description 2
- 239000003870 refractory metal Substances 0.000 claims 1
- 239000010944 silver (metal) Substances 0.000 description 12
- 229910052742 iron Inorganic materials 0.000 description 9
- 239000010953 base metal Substances 0.000 description 7
- 238000003466 welding Methods 0.000 description 7
- 238000005219 brazing Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 239000000374 eutectic mixture Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 238000007747 plating Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical group C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 229910017944 Ag—Cu Inorganic materials 0.000 description 1
- 229910002549 Fe–Cu Inorganic materials 0.000 description 1
- RZJQYRCNDBMIAG-UHFFFAOYSA-N [Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Zn].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn] Chemical class [Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Cu].[Zn].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Ag].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn].[Sn] RZJQYRCNDBMIAG-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 150000002815 nickel Chemical class 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000010934 sterling silver Substances 0.000 description 1
- 229910000898 sterling silver Inorganic materials 0.000 description 1
Landscapes
- Contacts (AREA)
Description
(イ) 技術分野
本考案は、開閉器、遮断器、パワーリレー等の
電気接点機構、特に高負荷電流遮断器用複合電気
接点に関するものである。
かかる複合電気接点の接点部は、銀マトリツク
ス中に金属酸化物或は耐熱金属を複合したもので
あり、この接点部に接合される導電用の台部は銀
に次いで電導性の良い銅、アルミニウム或はそれ
らの台金が用いられている。この接点部に接合さ
れる導電用の台部は、リベツト状の複合電気接点
の場合は断面がＴ字状の脚部であり、スポツト溶
接のボタン形複合電気接点の場合は例えば板バネ
状の台金である。
(ロ) 背景技術
上記した種類の複合電気接点の接点部は、台部
に冷間或は熱間圧接法によつて接合されるか、或
は銅や銀ローによつて接合されている。
ところが、ロー付けによる場合は、大電流の遮
断時のアークによる熱で接点部が台部から脱落す
る事例が多い。
これは、ロー付けされた接合部分の融点が低
く、ほとんどの場合がAg−Cuの共融混合物の融
点（約725℃）以下の温度で液相合金となつて接
合強度が極端に低下してしまうためである。
また、ローを用いない圧接法によつて場合で
も、同様な事例がみられる。即ち、接点部の寸法
を小型化して接点部に用いられる銀を節約してコ
ストダウンを図る近年の要請のために、接点部に
負荷される電荷（電流／単位面積）は富に高まつ
ている。このために、接点面には瞬時ではある
が、20〜100A／mm2もの通電アークエネルギーを
電流遮断器用複合接点は受けることになる。
この際に、接点部と台部との接合面に銅と銀の
相互拡散、移転が生じて耐熱性に欠け、高接触抵
抗で耐溶着性に劣る共融混合物が生成して、複合
電気接点の接点特性、特に遮断特性が大きく損な
われることになる。
(ハ) 考案の開示
本考案は上述した今までの複合電気接点の欠陥
を解決するものであつて、本考案にあつては接点
部と台部との間に鉄或はその合金の薄層を介在さ
せたために、該両部間に離脱が生じることがな
く、しかも該薄層には空孔を設け、この空孔に接
点或は台部の金属或はそれらの合金を充満させた
ので、両部間の良導電性も保証されるのである。
鉄或はその合金は、接点部のAg或はそれに裏
打ちされたAg或はその合金とほとんど合金をつ
くることがないので、台部のCuがAg中へ移転、
拡散するのを防ぎ、従つて低融点共融混合物が接
点部と台部との間に生成するのを防ぐことにな
る。しかも、この鉄或はその合金の薄層は台部の
銅或はその合金に直付けできる利点がある。
本考案になる複合電気接点の利点を列記する
と、以下の通りである。
ａ 接点部と台金との間の鉄或はその合金は、接
点部の台金へのスポツトウエルデイングを容易
にして、接点の組立てと組付け原価を低減す
る。
ｂ 接点部がAg＋WC等の成形体になる場合に
は、該成形体中のAgスケルトンによる導体発
熱を保証することができる。
ｃ 接点部と台金との間の鉄或はその合金は、そ
の高融点強度によつて、アークエネルギーによ
る熱衝撃に起因する電気接点のクラツクや破損
を防止する。
ｄ 該鉄或はその合金層の厚みだけ接点の高さが
安価な鉄構造層で保証されて、接点表面の消耗
が少なくなる。
ｅ ロー付時のロー材及びその前後処理等の工程
を省くことができる。
ｆ Fe−Cuの共融混合物の融点は高く（約1500
℃）、CuのAg中への移転がなく、大電流の遮
断器用として特に好適である。
ｇ 上述した利点は、ややもすると接点部と台部
間の導電性を損なうものであるが、良導電性の
金属或は合金が充満した空孔によつて該両部間
の良好な導電性も保証されるものである。
(ニ) 実施例
(1) 第１図に図示される寸法（単位はmmで、以下
同じ）の接点部１は、Ag−CdO（13％）−SnO2
（0.5％）−Ni（0.1％）になり、0.2mmの純銀の裏
打ち２を有する。
３は図示される寸法のFeを微量含む銅合金
のリベツト状の台部で、その上面に厚み20〜
50μの多孔性のFeメツキ４が設けられている。
このFeメツキ薄層４は表面に無数の凹凸セレ
ーシヨンが付けられている。このFeメツキ薄
板層４は接点部と台部との間に介在する前述し
た本考案の特徴をなす鉄或はその合金の薄層を
つくるものである。そして、接点部と台部とを
衝当して電気溶接した。
上記Feメツキ薄板層４は鉄族金属或はその
合金でつくられた多孔性の板状、網状のもの、
多孔性スケルトンを有する焼成板、素材を渦巻
き状に巻いた線材を切断したもの等でなり、そ
の一面には電気抵抗溶接性を高めるために前記
した如き凹凸セレーシヨンを設けたものであ
る。
なお、Fe薄板４の孔中にはAg，Cu，Al等の
良伝導材が満たされて、台部に接合されてい
る。
(2) 第２図ａ，ｂはFe薄板４の中心に穴をあけ
たものである。
(3) 第３図に図示されるものは、接点部の突起部
を板状の台部にカシメたものである。
(4) 第４図において、0.2mmの純銀が裏打ちされ
た径５mmで厚み1.5mmのAg−CdO（15％）にな
る接点部１は、その底面に0.2mm厚のニツケル
円板４が予備接着されている。
このニツケル円板４には0.5mm径の孔が多数
打抜かれており、この中にはAgが充満してい
る。
この接点部１を幅８mmで厚み１mmの鉄を微量
含む銅合金のブレーカー用固定端子の上に置
き、電極５，６の間で抵抗溶接した。
台部３とニツケル板はスポツト溶接され、こ
の時に発生した拡散熱で接点部１と台部３は熱
圧接された。
(5) 5μ粒子のAgと１〜10μ粒子のWCを用いて、
Ag＋WC（50％）の円盤状の成型体をつくつ
た。この成型体の径を５mmで、厚みを0.7mmと
した。
この成型体を径が５mmで厚さが0.3mmのFe粒
子（50〜150μ）層の上に置いて〓／cm2で同時
成形した。この時、Fe粒子層の下面がセレー
シヨンを形成するように成形した。
この成形物を炭素板上に置いた純銀の上に置
き、1200℃で２時間H2中で焼結した。
炭素板上においた純銀の量は純銀が成形物中
に含浸して接点部をなす成形物中の下層のFe
層中の空孔をほぼ満たしかつ成形物中の上層の
Ag＋WC（50％）がAg＋WC（40％）になる量
と予めしておいた。この焼結成形接点部をブレ
ーカー用台金に電気溶接で接合した。
(ホ) 考案の効果
上記した実施例(1)で得られた本考案になるリ
ベツト形状の電気複合接点と、同寸法で同一材
質になる通常の冷間圧着法による（即ち、接点
部と台部との間にFe層４を有しない）リベツ
ト状電気複合接点を、ブレーカー（30A、
120V）として使つて、配線用ブレーカー
（120V、5000A）の短絡テストをおこなつた。
テスト規定に基く各５台（3P）についての
Ｏ，COの繰返しラスト結果は、次の通りであ
つた。
(a) Technical Field The present invention relates to electrical contact mechanisms for switches, circuit breakers, power relays, etc., and particularly to composite electrical contacts for high-load current circuit breakers. The contact portion of such a composite electrical contact is made of a composite of metal oxide or heat-resistant metal in a silver matrix, and the conductive base portion bonded to this contact portion is made of copper or aluminum, which has the second highest conductivity after silver. Or those base metals are used. In the case of a rivet-shaped composite electrical contact, the conductive base part joined to this contact part is a leg part with a T-shaped cross section, and in the case of a spot-welded button-shaped composite electrical contact, it is a leg part in the shape of a leaf spring, for example. It is the base metal. (B) Background Art The contact portion of the above-mentioned type of composite electrical contact is joined to the base by cold or hot pressure welding, or by copper or silver brazing. However, in the case of brazing, there are many cases where the contact part falls off from the base part due to the heat generated by the arc when a large current is interrupted. This is because the melting point of the brazed joint is low, and in most cases it becomes a liquid phase alloy at a temperature below the melting point of the Ag-Cu eutectic mixture (approximately 725℃), resulting in an extremely low joint strength. This is to put it away. Similar cases can also be seen when using pressure welding methods that do not use rows. In other words, due to the recent demand for reducing the size of the contact area and saving the silver used in the contact area to reduce costs, the electric charge (current/unit area) loaded on the contact area has increased significantly. There is. For this reason, the composite contact for a current circuit breaker receives current-carrying arc energy of 20 to 100 A/mm 2 on the contact surface, albeit instantaneously. At this time, mutual diffusion and transfer of copper and silver occur on the joint surface between the contact part and the base part, resulting in the formation of a eutectic mixture that lacks heat resistance, has high contact resistance, and has poor welding resistance, resulting in the formation of a composite electrical contact. The contact characteristics, especially the breaking characteristics, will be greatly impaired. (c) Disclosure of the invention The present invention solves the above-mentioned defects of the conventional composite electrical contacts, and in the present invention, a thin layer of iron or its alloy is used between the contact part and the base part. Because the two parts are interposed, separation does not occur between the two parts, and the thin layer is provided with a hole, and this hole is filled with the metal of the contact or the base, or an alloy thereof. , good conductivity between both parts is also guaranteed. Iron or its alloy hardly forms an alloy with the Ag in the contact area, the Ag lining it, or its alloy, so the Cu in the base transfers into the Ag.
This will prevent diffusion and therefore a low melting point eutectic mixture from forming between the contact and the platform. Moreover, this thin layer of iron or its alloy has the advantage that it can be directly attached to the copper or its alloy of the base. The advantages of the composite electrical contact of the present invention are listed below. a. Iron or its alloy between the contact part and the base metal facilitates spot welding of the contact part to the base metal, reducing assembly and assembly costs of the contact. (b) When the contact portion is a molded body such as Ag+WC, conductor heat generation due to the Ag skeleton in the molded body can be guaranteed. c. The high melting point strength of iron or its alloy between the contact part and the base metal prevents the electrical contact from cracking or breaking due to thermal shock caused by arc energy. d) The height of the contact point is guaranteed by the inexpensive iron structure layer by the thickness of the iron or its alloy layer, and the wear of the contact surface is reduced. e It is possible to omit processes such as brazing material during brazing and its pre- and post-processing. f The melting point of the Fe-Cu eutectic mixture is high (approximately 1500
°C), there is no transfer of Cu into Ag, making it particularly suitable for use in large current circuit breakers. g The above-mentioned advantages are that the conductivity between the contact part and the base part may be impaired, but the pores filled with a highly conductive metal or alloy can improve the good conductivity between the two parts. is also guaranteed. (D) Example (1) The contact part 1 having the dimensions shown in FIG .
(0.5%)-Ni (0.1%) with a 0.2 mm pure silver backing 2. 3 is a rivet-shaped base made of copper alloy containing a small amount of Fe with the dimensions shown in the figure, and a thickness of 20~20 mm on its upper surface.
A 50μ porous Fe plating 4 is provided.
This thin Fe plating layer 4 has numerous serrations on its surface. This Fe plating thin plate layer 4 is a thin layer of iron or its alloy which is a feature of the present invention described above and is interposed between the contact portion and the base portion. Then, the contact portion and the base portion were abutted and electrically welded. The Fe-plated thin plate layer 4 is a porous plate-like or net-like material made of iron group metal or its alloy;
It is made of a fired plate having a porous skeleton, a cut wire rod made of spirally wound material, etc., and one side thereof is provided with the above-mentioned uneven serrations to improve electrical resistance weldability. Note that the holes in the Fe thin plate 4 are filled with a highly conductive material such as Ag, Cu, Al, etc., and are bonded to the base. (2) Figure 2 a and b show a hole made in the center of the Fe thin plate 4. (3) The one shown in FIG. 3 has the protruding part of the contact part caulked to a plate-shaped base part. (4) In Fig. 4, the contact part 1 is made of Ag-CdO (15%) with a diameter of 5 mm and a thickness of 1.5 mm and is lined with 0.2 mm of pure silver. It is glued. This nickel disk 4 is punched with a large number of holes each having a diameter of 0.5 mm, and these holes are filled with Ag. This contact portion 1 was placed on a fixed terminal for a breaker made of a copper alloy containing a small amount of iron, with a width of 8 mm and a thickness of 1 mm, and resistance welded between the electrodes 5 and 6. The pedestal part 3 and the nickel plate were spot welded, and the contact part 1 and the pedestal part 3 were welded under heat and pressure by the diffusion heat generated at this time. (5) Using 5μ particles of Ag and 1 to 10μ particles of WC,
A disk-shaped molded body of Ag + WC (50%) was created. The diameter of this molded body was 5 mm, and the thickness was 0.7 mm. This molded body was placed on a layer of Fe particles (50 to 150μ) with a diameter of 5 mm and a thickness of 0.3 mm, and simultaneously molded at 〓/cm 2 . At this time, the Fe particle layer was molded so that the lower surface formed a serration. This molding was placed on pure silver placed on a carbon plate and sintered in H 2 at 1200° C. for 2 hours. The amount of pure silver placed on the carbon plate is determined by the amount of Fe in the lower layer of the molded product, which is impregnated into the molded product and forms the contact area.
Almost fills the pores in the layer and fills the upper layer of the molded product.
The amount was set in advance so that Ag + WC (50%) would become Ag + WC (40%). This sintered contact portion was joined to the breaker base metal by electric welding. (e) Effects of the invention The rivet-shaped electrical composite contact of the invention obtained in the above-mentioned Example (1) and the conventional cold crimping method (i.e., the contact part and the base are made of the same size and the same material) A rivet-like electrical composite contact (without Fe layer 4 between the
120V) to perform a short circuit test on a wiring breaker (120V, 5000A). The last repeated O and CO results for each 5 units (3P) based on the test regulations were as follows.
【表】
本考案になる複合電気接点は、全ての繰返し
テストで全台数パスしたが、対比のための通常
の接点は第２回目のCOで全台数がパスできず、
本考案のものが対比品にくらべて数段まさる遮
断特性を示した。
上記の通りテストをパスした本考案になる接
点について更に絶縁試験と導通テストを行つた
が、全てに合格した。
上記した実施例(5)による本考案の電気接点
と、Ag＋WC（40％）になる接点部をブレーカ
ー用台金にロー材（BG−６）を用いて従来通
りにロー付けした接点とを上記と同様に対比
試験を行なつた。
ブレーカーは50A、220Vで、短絡テストは
220Vで10000Aで3P器で各５台ずつ試験した。
その結果は次の通りであつた。[Table] All of the composite electrical contacts of the present invention passed all of the repeated tests, but all of the normal contacts for comparison failed to pass the second CO test.
The product of the present invention exhibited cut-off characteristics that were several orders of magnitude better than that of the comparable product. The contact of the present invention, which passed the test as described above, was further subjected to insulation tests and continuity tests, and all tests were passed. The electrical contact of the present invention according to the above-mentioned embodiment (5) and the contact in which the contact part with Ag + WC (40%) is brazed to the base metal of the breaker using brazing material (BG-6) as described above. A comparative test was conducted in the same manner. The breaker is 50A, 220V, and the short circuit test is
Five units each were tested using 3P equipment at 220V and 10,000A.
The results were as follows.
【表】
点
本考案になる接点は全て試験を通過したが、
通常のロー付け法による接点は５台中２台が通
過し得るに過ぎなかつた。不合格の主な原因
は、ローの移転、表面付着による溶着と接点の
脱落であつた。
本考案の複合接点にあつては、接点部と台部と
の間のFe或はNi薄板の存在のために接点部の脱
落がなく、しかもこのような薄板を採用すること
によつて両部間の導電性がややもすると劣化する
のを、該薄板に良導電性の金属或は合金が充満し
た空孔を設けることにより、両部間の良導電性を
保証することができるのである。[Table] Points All the contacts devised in this invention passed the test, but
Only two out of five contacts were able to pass through the contacts made using the normal soldering method. The main causes of failure were transfer of the low, welding due to surface adhesion, and falling off of the contacts. In the composite contact of the present invention, due to the presence of the Fe or Ni thin plate between the contact part and the base part, the contact part does not fall off, and by using such a thin plate, both parts can be By providing the thin plate with holes filled with a highly conductive metal or alloy, it is possible to ensure good conductivity between the two parts, although the conductivity between the two parts deteriorates over time.
第１図、第２図ａ〜ｂ及び第３図はそれぞれ本
考案に係る複合電気接点の実施例を示す説明的断
面図、第４図は本考案の複合電気接点をつくるた
めに接点部と台部を電極間に置いて抵抗溶接する
際の説明的な断面図である。
符号説明、１……接点部、２……純銀裏打ち、
３……台部、４……鉄族金属の薄層、５，６……
電極。
1, 2a to 2b, and 3 are explanatory cross-sectional views showing embodiments of the composite electrical contact according to the present invention, respectively, and FIG. FIG. 7 is an explanatory cross-sectional view when resistance welding is performed by placing the stand between electrodes. Code explanation, 1...Contact part, 2...Sterling silver lining,
3... Base part, 4... Thin layer of iron group metal, 5, 6...
electrode.
Claims (1)
と銅、アルミニウム或はそれらの合金になる台
部とからなる複合電気接点にして、該接点部と
台部との間に該接点部或は台部の金属或はそれ
らの合金が充満した良導電性の孔部を有する鉄
族金属或はその合金の薄層を介在させたことを
特徴とする複合電気接点。 (2) 前記接点部はその表面に純銀の層が設けられ
てなる実用新案登録請求の範囲第１項記載の複
合電気接点。[Claims for Utility Model Registration] (1) A composite electrical contact consisting of a contact part containing a refractory metal in a silver matrix and a base part made of copper, aluminum or an alloy thereof; A composite electrical device characterized in that a thin layer of an iron group metal or an alloy thereof is interposed between the metal of the contact portion or the base portion or an alloy thereof having a well-conducting pore filled with the metal or alloy thereof. contact. (2) The composite electrical contact according to claim 1, wherein the contact portion is provided with a pure silver layer on its surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13658387U JPH0441529Y2 (en) | 1987-09-07 | 1987-09-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13658387U JPH0441529Y2 (en) | 1987-09-07 | 1987-09-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6440122U JPS6440122U (en) | 1989-03-09 |
| JPH0441529Y2 true JPH0441529Y2 (en) | 1992-09-30 |
Family
ID=31397229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13658387U Expired JPH0441529Y2 (en) | 1987-09-07 | 1987-09-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0441529Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006269380A (en) * | 2005-03-25 | 2006-10-05 | Matsushita Electric Ind Co Ltd | Electric contact, its manufacturing method and thermal protector |
-
1987
- 1987-09-07 JP JP13658387U patent/JPH0441529Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6440122U (en) | 1989-03-09 |
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