JPH0132607B2 - - Google Patents
Info
- Publication number
- JPH0132607B2 JPH0132607B2 JP11948180A JP11948180A JPH0132607B2 JP H0132607 B2 JPH0132607 B2 JP H0132607B2 JP 11948180 A JP11948180 A JP 11948180A JP 11948180 A JP11948180 A JP 11948180A JP H0132607 B2 JPH0132607 B2 JP H0132607B2
- Authority
- JP
- Japan
- Prior art keywords
- contact
- double
- ended
- diameter
- rivet
- 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
Landscapes
- Manufacture Of Switches (AREA)
Description
本発明は、リベツト型両頭接点の製造方法に関
するものである。
リベツト型両頭接点は、台材にかしめられ、切
換接点として広くスイツチ・リレー等の電気開閉
機器に利用されている。これらの電気開閉機器
は、最近、小型化や高信頼性が要求され、さらに
貴金属の高謄にともないあわせて省貴金属化が要
求され始めている。したがつて、リベツト型両頭
接点も接点部が薄く、小さくなる傾向が進んでい
る。
従来、第１図ａに示すようなリベツト型両頭接
点１を製造するには、第２図ａに示すように接点
部２とベース部３とがろう付された両頭接点素材
４をパンチで成形してリベツト型両頭接点１とし
ていた。また、第１図ｂに示すような接点部２′
の径がベース部３′の直径より小なるリベツト型
両頭接点１′の場合も、第２図ｂに示すような両
頭接点素材４′を同様にして成形していた。第１
図ａ，ｂに示すような線の直径に比しあし長のリ
ベツト型両頭接点１，１′は、冷間圧接では製造
することが困難である。なぜなら、冷間圧接によ
る場合は、切断時の破断面を利用して線の直径を
太らせながら異種金属を接合する技術であり、結
果としてリベツト型両頭接点の頭径と全長がほぼ
等しい場合にのみ可能で、その比が１：1.2以上
になると歩留りの点で不可能となるからである。
他方、従来のろう付による製造方法では、接点
部２がある程度の直径（約２mm）と厚さ（約３
mm）がある場合は問題がないが、直径が約1.5mm
以下や厚さが約2.5mm以下になると問題が生ずる。
すなわち、取扱いが困難で作業性が悪いこと、ろ
う付時に接点部２が重量的に軽いため一方のろう
付強度が十分でなかつたりろう材が接点表面にま
わつて接点部２を汚染したりするなどの欠点があ
つた。
本発明者は、上記欠点に鑑み鋭意攻究の結果接
点部の直径が小さく厚さの薄い、しかも接合強度
が強く、かつ安定した品質の得られるリベツト型
両頭接点の製造方法を見出し、省貴金属化に成功
したものである。
本発明は、貴金属を主成分とする線材とこの直
径に同径又はより大きい直径の卑金属よりなる線
材とを各々切断したのち成形と同時に冷間圧接し
て接合部とベース部とよりなる接点片を得、その
後、この接点片のベース部を相対向せしめろう付
して両頭接点素材とし、最後にこの両頭接点素材
を成形してリベツト接点となすことを特徴とする
リベツト型両頭接点の製造方法である。
以下、図面に基づいて説明する。
第３図乃至第７図は本発明によるリベツト型両
頭接点の製造方法を示す図である。第３図に示す
ように、貴金属を主成分とする線材５と卑金属よ
りなる線材６とを各々切断して両者を同一軸上に
もつてきて成形と同時に冷間圧接して第４図に示
すように接点部２″とベース部３″とよりなる接点
片４″を得る。ここで、貴金属を主成分とする線
材には、例えば、AuやAgなどの貴金属、Au−
Ag、Ag−Cu、Ag−Cd、Ag−Niなどの貴金属
合金、Ag−CdO、Ag−SnO−InO、Ag−SnOな
どの酸化物含有貴金属合金などがある。また、卑
金属よりなる線材は通常CuやCu−Ni等のCu合金
が用いられる。しかし、冷間圧接しただけでは、
接合が破断面のみ寄与し、切断面が寄与していな
いため十分ではない。
次に、この接点片４″を第５図に示すように、
ろう材７を介して各々の接点片のベース部を相対
向せしめろう付する。ろう付しやすいよう、あら
かじめろう留用凹をベース部に設けても良い。貴
金属を主成分とする接点部２″は再結晶温度が約
200℃と低く、再結晶温度以上になると、結晶粒
が粗大化し、表面が荒れ、冷間圧接時の接点部と
ベース部との切断面がろう付中に破断面と似たよ
うな面になる。第６図に示すようにろう付された
両頭接点素材８は、第７図に示すように成形され
リベツト型両頭接点９が得られる。この成形時に
一方の冷間圧接面１０は面積が増大し、ろう付中
に破断面と似たような新たな面が冷間圧接され接
合強度が増加する。他方の冷間圧接面１１は、台
材に取付け、かしめ加工により冷間圧接され、接
合強度が増加する。このようにして、第１図ａに
対応して第７図のようなリベツト型両頭接点９が
得られる。また、第１図ｂに対応するリベツト型
電気接点を得るには、図示しないが第３図におい
て卑金属よりなる線材６の線の直径を貴金属を主
成分とする線材５の線の直径より太くすれば良
い。この場合、冷間圧接すると接点部２′が台材
部３′に一部湾曲状に食い込むが、切断面が残つ
ているため接合強度としては、単に冷間圧接した
のみでは十分なものが得られず、ろう付した後冷
間圧接してはじめて十分なものが得られる。な
お、リベツト型両頭接点９において頭径に比し足
長が著しく大きいときには、図示しないがベース
部３″と同種の材料よりなるスペーサーを重ねて
ろう付すれば良い。
以下、本発明の効果を一層明瞭ならしめるため
実施例に基づいて説明する。
実施例
直径1.4mmよりなるAg−12重量％CdO線材５を
2.3mmに切断したものと、これと同径のCu線材６
を2.84mmに切断したものとを冷間圧接して直径
2.5mm厚さ1.6mmの接合面Ａを有する接点片４″を
得た。ついで、この接点片のベース部を相対向せ
しめてCuろう合金よりなるろう材を介してN2ガ
ス雰囲気中で炉中ろう付した。その後、この両頭
接点素材８を成形して、接合面Ｂを有する頭部
（直径3.6mm、厚さ0.7mm）と接合面Ｃを有する足
部（直径３mm、厚さ1.7mm）のリベツト型両頭接
点９を得た。
次に、接合面Ａを有する接点片４″及び接合面
Ｂを有する頭部と接合面Ｃを有する足部とからな
るリベツト型電気接点９を各々30個それぞれの接
合面でのはがし試験を行ない、接合強度を調べた
ところ、下表のような結果を得た。なお、接合不
良（７Kg／mm2以下）及び外観不良は全くなかつ
た。
The present invention relates to a method of manufacturing a rivet type double-ended contact. Rivet-type double-ended contacts are caulked to a base material and are widely used as switching contacts in electrical switching equipment such as switches and relays. Recently, these electric switchgear devices have been required to be smaller and have higher reliability, and as precious metals have become more expensive, there has been a demand for less precious metals. Accordingly, there is a growing tendency for the contact portion of rivet-type double-ended contacts to become thinner and smaller. Conventionally, in order to manufacture a riveted double-ended contact 1 as shown in FIG. 1a, a double-ended contact material 4 with a contact portion 2 and a base portion 3 brazed together is formed using a punch as shown in FIG. 2a. It was made into a rivet type double-ended contact 1. In addition, a contact portion 2' as shown in FIG.
In the case of a rivet-type double-headed contact 1' having a diameter smaller than that of the base portion 3', a double-headed contact material 4' as shown in FIG. 2b was molded in the same manner. 1st
Rivet-type double-headed contacts 1, 1', such as those shown in Figures a and b, which have a length compared to the diameter of the wire, are difficult to manufacture by cold welding. This is because cold pressure welding is a technology that uses the fractured surface during cutting to increase the diameter of the wire while joining dissimilar metals.As a result, when the head diameter and overall length of a riveted double-ended contact are approximately equal, This is because if the ratio becomes 1:1.2 or more, it becomes impossible in terms of yield. On the other hand, in the conventional manufacturing method using brazing, the contact portion 2 has a certain diameter (approximately 2 mm) and thickness (approximately 3 mm).
mm), there is no problem, but the diameter is about 1.5 mm.
Problems arise when the thickness is less than about 2.5 mm or less.
In other words, it is difficult to handle and workability is poor, and because the contact part 2 is light in weight during brazing, the brazing strength on one side is not sufficient, and the brazing metal spreads around the contact surface and contaminates the contact part 2. There were drawbacks such as: In view of the above-mentioned drawbacks, the inventor of the present invention has conducted intensive research and found a method for manufacturing a rivet-type double-headed contact, which has a small contact diameter and a small thickness, strong bonding strength, and stable quality, and which saves precious metals. It was successfully developed. In the present invention, a wire rod mainly composed of a noble metal and a wire rod made of a base metal having the same diameter or a larger diameter are cut, and then cold pressure welded at the same time as forming to form a joint part and a base part. A method for producing a riveted double-ended contact, which comprises: obtaining a double-ended contact, then brazing the base parts of the contact pieces facing each other to form a double-ended contact material, and finally molding the double-ended contact material to form a riveted contact. It is. The following will explain based on the drawings. 3 to 7 are diagrams showing a method of manufacturing a rivet type double-ended contact according to the present invention. As shown in FIG. 3, a wire rod 5 mainly composed of a precious metal and a wire rod 6 made of a base metal are cut, brought together on the same axis, and cold-welded at the same time as forming, as shown in FIG. 4. As shown in FIG.
Examples include noble metal alloys such as Ag, Ag-Cu, Ag-Cd, and Ag-Ni, and oxide-containing noble metal alloys such as Ag-CdO, Ag-SnO-InO, and Ag-SnO. Further, the wire made of base metal is usually Cu or a Cu alloy such as Cu-Ni. However, just by cold welding,
This is not sufficient because only the fracture surface contributes to the bonding, and the cut surface does not. Next, as shown in FIG. 5, this contact piece 4'' is
The base portions of each contact piece are opposed to each other via the brazing material 7 and brazed. To facilitate brazing, a recess for brazing may be provided in the base portion in advance. The recrystallization temperature of the contact part 2″, which is mainly made of precious metal, is approximately
When the temperature is as low as 200℃ and above the recrystallization temperature, the crystal grains become coarse, the surface becomes rough, and the cut surface between the contact part and the base part during cold welding becomes a surface similar to the fracture surface during brazing. Become. The double-ended contact material 8 brazed as shown in FIG. 6 is molded as shown in FIG. 7 to obtain a rivet-type double-ended contact 9. During this forming, the area of one cold welding surface 10 increases, and during brazing, a new surface similar to the fractured surface is cold welded, increasing the joint strength. The other cold welding surface 11 is attached to a base material and cold welded by caulking to increase the joint strength. In this way, a rivet-type double-ended contact 9 as shown in FIG. 7 corresponding to FIG. 1a is obtained. Furthermore, in order to obtain a rivet-type electrical contact corresponding to the one shown in FIG. 1b, the diameter of the wire 6 made of base metal in FIG. Good. In this case, when cold welding is performed, the contact part 2' will partially cut into the base part 3' in a curved shape, but since the cut surface remains, sufficient bonding strength cannot be obtained by simply cold welding. However, a sufficient product can only be obtained by cold welding after brazing. Note that when the leg length of the rivet type double-headed contact 9 is significantly larger than the head diameter, a spacer made of the same material as the base portion 3'' may be stacked and brazed (not shown).Hereinafter, the effects of the present invention will be explained. In order to make it clearer, the explanation will be based on an example.Example An Ag-12 wt% CdO wire 5 having a diameter of 1.4 mm was
A piece cut to 2.3 mm and a Cu wire rod 6 of the same diameter.
Cut to 2.84mm and cold welded to make the diameter
A contact piece 4" having a bonding surface A of 2.5 mm and 1.6 mm in thickness was obtained. Next, the base parts of this contact piece were made to face each other and heated in a furnace in an N2 gas atmosphere through a brazing material made of a Cu brazing alloy. After that, this double-ended contact material 8 was molded to form a head part (diameter 3.6 mm, thickness 0.7 mm) having a joint surface B and a foot part (diameter 3 mm, thickness 1.7 mm) having a joint surface C. ) was obtained.Next, 30 rivet-type electrical contacts 9 each consisting of a contact piece 4'' having a joint surface A, a head portion having a joint surface B, and a foot portion having a joint surface C were obtained. A peel test was conducted on each joint surface to examine the joint strength, and the results shown in the table below were obtained. Note that there were no bonding defects (7 kg/mm 2 or less) and no appearance defects.
【表】
従来例
Cuよりなる直径2.5mm、厚さ1.71mmのベースデ
イスクの上面と下面にAg−12重量％CdOよりな
る直径2.5mm、厚さ0.66mmの接点デイスクとを構
成させ、N2ガス雰囲気中で炉中ろう付した。そ
の後、この両頭接点素材を成形して第１図に示す
リベツト型両頭接点１を得た。
次に実施例と同様に第１図に示す接合面Ｄ、接
合面Ｅの接合強度を調べたところ下表のような結
果を得た。[Table] Conventional example Contact disks made of Ag-12wt% CdO with a diameter of 2.5 mm and a thickness of 0.66 mm are constructed on the top and bottom surfaces of a base disk made of Cu with a diameter of 2.5 mm and a thickness of 1.71 mm. Brazed in a furnace in a gas atmosphere. Thereafter, this double-ended contact material was molded to obtain a rivet-type double-ended contact 1 shown in FIG. Next, in the same manner as in the example, the bonding strengths of the bonding surfaces D and E shown in FIG. 1 were examined, and the results shown in the table below were obtained.
【表】
上記実施例及び従来例から明らかなように、本
発明による製造方法によれば、従来例にある接合
不良や外観不良が全くないことがわかる。また、
実施例における頭部接合面Ｂは、単に冷間圧接し
たのみの接合面Ａに比し接合強度が優れ、ろう付
時の熱処理効果があらわれている。実施例におけ
る足部接合面Ｃは、接合面Ａよりも若干優れてい
るものの頭部接合面Ｂよりも劣つており、ろう付
の後の冷間圧接が接合強度の増加に必要なことが
わかる。なお、接点開閉試験を行つても実施例の
ものは、接触不良が生じることがなかつた。
以上説明したように、本発明によれば従来例に
比し外観不良や接合不良などが全く生ぜず極めて
高品質のリベツト型電気接点が得られ、高信頼性
に応ずることができ、かつ、従来例では得ること
の出来なかつたリベツト型両頭接点の頭径と全長
の比が１：1.2以上でも加工できるという効果が
ある。[Table] As is clear from the above embodiments and conventional examples, according to the manufacturing method of the present invention, there are no bonding defects or appearance defects that occur in the conventional examples. Also,
The head joint surface B in the example has superior joint strength compared to the joint surface A, which was simply cold-welded, and the heat treatment effect during brazing appears. The foot joint surface C in the example is slightly better than the joint surface A, but inferior to the head joint surface B, indicating that cold pressure welding after brazing is necessary to increase the joint strength. . In addition, even when a contact opening/closing test was conducted, no contact failure occurred in the example. As explained above, according to the present invention, it is possible to obtain an extremely high quality rivet type electrical contact without causing any defective appearance or poor bonding compared to the conventional example, and to meet high reliability. There is an effect that it is possible to process a rivet type double-ended contact with a ratio of head diameter to total length of 1:1.2 or more, which could not be obtained in the example.
第１図ａ，ｂ及び第２図ａ，ｂは従来の製造方
法の断面図で、第１図ａ，ｂはリベツト型両頭接
点、第２図ａ，ｂは両頭接点素材をそれぞれ示
す。第３図乃至第７図は本発明の製造方法の断面
図で、第３図は切断工程、第４図は接点片、第５
図は炉中ろう付工程、第６図は両頭接点素材、第
７図はリベツト型両頭接点をそれぞれ示す。
２″……接点部、３″……ベース部、４″……接
点片、５……貴金属を主成分とする線材、６……
卑金属よりなる線材、７……ろう材、８……両頭
接点素材、９……リベツト型両頭接点、１０，１
１……冷間圧接面、Ａ，Ｂ，Ｃ，Ｄ，Ｅ……接合
面。
1a and 2b are cross-sectional views of the conventional manufacturing method. FIGS. 1a and 2b show a rivet-type double-headed contact, and FIGS. 2a and 2b show a double-headed contact material, respectively. 3 to 7 are cross-sectional views of the manufacturing method of the present invention, in which FIG. 3 shows the cutting process, FIG. 4 shows the contact piece, and FIG.
The figure shows the furnace brazing process, FIG. 6 shows the double-ended contact material, and FIG. 7 shows the rivet-type double-ended contact. 2″...Contact part, 3″...Base part, 4″...Contact piece, 5...Wire mainly composed of precious metal, 6...
Wire made of base metal, 7... Brazing metal, 8... Double-ended contact material, 9... Rivet type double-ended contact, 10, 1
1... Cold pressure welding surface, A, B, C, D, E... Joint surface.
Claims (1)
又はより大きい直径の卑金属よりなる線材とを
各々切断したのち成形と同時に冷間圧接して接点
部とベース部とよりなる接点片を得、その後、こ
の接点片のベース部を相対向せしめろう付して両
頭接点素材とし、最後にこの両頭接点素材を成形
してリベツト接点となすことを特徴とするリベツ
ト型両頭接点の製造方法。1. A wire rod mainly composed of a precious metal and a wire rod made of a base metal with a diameter equal to or larger than this diameter are cut, and then cold pressure welded at the same time as forming to obtain a contact piece consisting of a contact part and a base part, Thereafter, the base parts of the contact pieces are made to face each other and brazed to form a double-ended contact material, and finally the double-ended contact material is molded to form a rivet contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11948180A JPS5744916A (en) | 1980-08-29 | 1980-08-29 | Method of producing rivet type double-ended contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11948180A JPS5744916A (en) | 1980-08-29 | 1980-08-29 | Method of producing rivet type double-ended contact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5744916A JPS5744916A (en) | 1982-03-13 |
| JPH0132607B2 true JPH0132607B2 (en) | 1989-07-07 |
Family
ID=14762350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11948180A Granted JPS5744916A (en) | 1980-08-29 | 1980-08-29 | Method of producing rivet type double-ended contact |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5744916A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5994300U (en) * | 1982-12-17 | 1984-06-26 | 三菱マテリアル株式会社 | Continuous copper furnace flue structure |
| JPS6115080A (en) * | 1984-06-29 | 1986-01-23 | 新日本製鐵株式会社 | Scrap preheating method by exhaust gas |
| JPS6176879A (en) * | 1984-09-19 | 1986-04-19 | 西脇 仁一 | Metal melter combining electricity generation system |
-
1980
- 1980-08-29 JP JP11948180A patent/JPS5744916A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5744916A (en) | 1982-03-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3041118A (en) | Electric contact element | |
| KR100435623B1 (en) | Joining method for ceramics and metal and joined body of ceramics and metal joined by the method | |
| CA2080524A1 (en) | Composite electrical contact | |
| JPH0316725A (en) | Thin plate spring material | |
| US3605262A (en) | Production of rivet-type bimetal contacts | |
| US6010059A (en) | Method for ultrasonic joining of electrical parts using a brazing alloy | |
| US6049046A (en) | Electric circuit protection device having electrical parts ultrasonically joined using a brazing alloy | |
| EP1019930B1 (en) | Method of ultrasonically joining two electrically conductive parts | |
| JPWO2007111017A1 (en) | Clad contact material and method for mounting the clad contact | |
| JP3075326B2 (en) | Manufacturing method of clad contact material | |
| JPS5935320A (en) | Contactor with arc resistant metal | |
| JPS643012B2 (en) | ||
| JPH0530071B2 (en) | ||
| HK100892A (en) | Watch case | |
| US20260005181A1 (en) | Semiconductor device and a method of manufacturing of the semiconductor device | |
| JP3061077B2 (en) | Manufacturing method of composite electrical contact material | |
| JP3081155B2 (en) | Thermal fuse and manufacturing method thereof | |
| JP3085474B2 (en) | Method of manufacturing strip for electrical contact | |
| JP2582818B2 (en) | Manufacturing method of rivet type composite electrical contact | |
| JPH0318284B2 (en) | ||
| JPH02251155A (en) | Gold alloy thin wire for semiconductor elements and bonding method thereof | |
| JPH0343916A (en) | Rivet-type clad contact | |
| JPH059885B2 (en) | ||
| JPS6220645B2 (en) | ||
| JP2781066B2 (en) | Brazing method of electrical contact material |