【発明の詳細な説明】[Detailed description of the invention]
本発明は、リベツト型のクラツド接点に関する
ものである。従来のリベツト型クラツド接点は、
接点材としてAg又はAg合金若しくはAg−酸化
物を用い、ベース材としてCuを用いて製造した
ものが殆んどであつた。
ところで、Ag−Ni、Ag−Cu等のAg合金やAg
−CdO、Ag−SnO2等のAg−酸化物より成る接
点材をCuのベース材に接合したリベツト型クラ
ツド接点は、接点材とCuのベース材との硬さ、
伸びに差が有る為、圧接と同時にリベツト型のク
ラツド接点に成形する場合及び予め接合した接点
材とベース材の円柱のクラツド接点をリベツト型
に成形する場合は、第１図ａに示すようになり、
また端子材に取付けると同時にリベツト型のクラ
ツド接点に成形する場合は、同図ｂに示すように
なり、いずれも接合材１とCuのベース材２との
接合部のフローラインが直線とならず、接点材１
の中央部が厚く、周縁部が薄くなるという問題点
があつた。
本発明は斯かる問題点を解決し、接点材とベー
ス材の接合部のフローラインが略直線で、接合材
の張厚が全面略均一なリベツト型のクラツド接点
を提供せんとするものである。
本発明のリベツト型のクラツド接点は、Ag−
Ni、Ag−Cu等のAg合金やAg−CdO，Ag−
SnO2等のAg−酸化物系の接点材が、P0.5〜3.5重
量％及び残部CuのCu合金のベース材に接合且つ
成形されていることを特徴とするものである。
このように本発明のリベツト型のクラツド接点
は、ベース材にCuの代わりにP0.5〜3.5重量％及
び残部CuのCu合金を用いているので、該ベース
材は硬さが高く、伸びの悪いAg合金、Ag−酸化
物系の接点材と硬さ、伸びが合わされ、例えば第
２図ａに示す如く接点材１とベース材２′とを、
同図ｂに示す如く冷間圧接すると共にリベツト型
のクラツド接点に成形すると接点材１とベース材
２′との接合部のフローラインが略直線となり、
接点材１の張厚が全面略均一なリベツト型のクラ
ツド接点３となるものである。
尚、このことは予め接合した接点材とベース材
の円柱のクラツド接点をリベツト型のクラツド接
点に成形する場合、また端子材に取付けると同時
にリベツト型のクラツド接点に成形する場合も同
様である。
上記Cu合金のベース材２′に於いて、P0.5〜3.5
重量％及び残部CuのCu合金としている理由は、
P0.5重量％未満ではCu合金のベース材の硬さが
不充分で、Ag合金、Ag−酸化物系の接点材１に
先立つて伸びてしまい、接点材１とベース材２′
との接合部のフローラインが直線とならず、従来
のリベツト型のクラツド接点と同様に接点材１の
中央部が厚く、周縁部が薄くなるからであり、
P3.5重量％を超えるとCu合金の加工性が著しく
低下するからである。
次に本発明のリベツト型のクラツド接点の効果
を明瞭にする為その具体的な実施例と従来例につ
いて説明する。
〔実施例〕
第２図ａに示す如く直径2.5mm、高さ５mmのCu
ーP2重量％より成るベース材２′の上面に、直径
2.5mm、高さ2.5mmのAgー12％CdOより成る接点材
１を重ねた後、同図ｂに示す如く冷間圧接と同時
に成形して、頭径4.7mm、頭高1.4mmのリベツト型
のクラツド接点３を得た。
〔従来例〕
実施例と同一寸法の円柱のCuのベース材の上
面に、実施例と同一寸法の同材質より成る接点材
を第２図ａと同様に重ねた後、冷間圧接と同時に
成形して実施例リベツト型のクラツド接点を得
た。
然してこれら実施例及び従来例のクラツド接点
各100個の接点材の接合部のフローライン及び全
面の張厚のばらつきを測定した処、下記の表に示
すような結果を得た。
The present invention relates to a rivet type clad contact. Conventional rivet type clad contacts are
Most of them were manufactured using Ag, Ag alloy, or Ag-oxide as the contact material and Cu as the base material. By the way, Ag alloys such as Ag-Ni and Ag-Cu and Ag
A rivet-type clad contact in which a contact material made of an Ag-oxide such as -CdO or Ag-SnO 2 is bonded to a Cu base material is characterized by the hardness of the contact material and the Cu base material.
Because there is a difference in elongation, when forming a rivet-type clad contact at the same time as pressure welding, or when forming a cylindrical clad contact of the contact material and base material that have been bonded in advance into a rivet type, the contact material should be formed as shown in Figure 1a. Become,
In addition, when forming a rivet-type clad contact at the same time as attaching it to a terminal material, the flow line at the joint between the bonding material 1 and the Cu base material 2 is not a straight line, as shown in Figure b. , contact material 1
The problem was that the center part was thick and the peripheral part was thin. The present invention solves these problems and provides a rivet-type clad contact in which the flow line at the joint between the contact material and the base material is substantially straight, and the thickness of the joint material is substantially uniform over the entire surface. . The rivet type clad contact of the present invention is made of Ag-
Ag alloys such as Ni, Ag-Cu, Ag-CdO, Ag-
It is characterized in that an Ag-oxide based contact material such as SnO 2 is bonded and molded to a base material of a Cu alloy containing 0.5 to 3.5% by weight of P and the balance being Cu. As described above, the rivet type clad contact of the present invention uses a Cu alloy of 0.5 to 3.5% by weight of P and the balance Cu instead of Cu as the base material, so the base material has high hardness and low elongation. If the hardness and elongation are matched with those of a bad Ag alloy or Ag-oxide type contact material, for example, as shown in Fig. 2a, the contact material 1 and the base material 2',
As shown in Figure b, when cold pressure welded and formed into a rivet-type clad contact, the flow line at the joint between the contact material 1 and the base material 2' becomes approximately straight;
This is a rivet-type clad contact 3 in which the contact material 1 has a substantially uniform thickness over the entire surface. This also applies when a cylindrical clad contact made of a contact material and a base material that have been bonded together is formed into a rivet-type clad contact, or when it is attached to a terminal material and simultaneously formed into a rivet-type clad contact. In the above Cu alloy base material 2', P0.5 to 3.5
The reason why it is a Cu alloy with weight% and balance Cu is as follows.
If P is less than 0.5% by weight, the Cu alloy base material will not have sufficient hardness and will elongate before the Ag alloy or Ag-oxide contact material 1.
This is because the flow line at the joint with the contact material 1 is not straight, and the center part of the contact material 1 is thick and the peripheral part is thin, similar to the conventional rivet type clad contact.
This is because if P exceeds 3.5% by weight, the workability of the Cu alloy will be significantly reduced. Next, in order to clarify the effects of the rivet type clad contact of the present invention, specific examples and conventional examples thereof will be described. [Example] As shown in Fig. 2a, Cu with a diameter of 2.5 mm and a height of 5 mm
- On the top surface of the base material 2' consisting of P2% by weight,
After stacking the contact material 1 made of Ag-12%CdO with a diameter of 2.5 mm and a height of 2.5 mm, a rivet mold with a head diameter of 4.7 mm and a head height of 1.4 mm is formed by cold welding and forming at the same time as shown in Figure b. A clad contact 3 was obtained. [Conventional example] A contact material made of the same material and having the same dimensions as in the example was layered on the top surface of a cylindrical Cu base material with the same dimensions as in the example in the same manner as shown in Fig. 2a, and then formed at the same time as cold welding. An example rivet type clad contact was obtained. However, when we measured the flow line and the variation in the overall tension thickness of 100 contact materials of each of the clad contacts of these examples and conventional examples, we obtained the results shown in the table below.
【表】
上記の表で明らかなように実施例のクラツド接
点は、接点材の接合部のフローラインが略直線で
あり、全面の張厚のばらつきが少なくて略均一で
安定しており、しかも従来例のクラツド接点に比
べ接点材の張厚が薄くて、接点材を全面に0.6mm
以上キープするのに約10％少なくて済むものであ
る。
以上詳記した通り本発明のリベツト型のクラツ
ド接点は、接点材とベース材の接合部のフローラ
インが略直線で、接点材の張厚が全面略均一であ
り、しかも接点材の張厚が必要最小限で良くて接
点材を節約できるので、従来のリベツト型クラツ
ド接点にとつて代わることのできる画期的なもの
と言える。[Table] As is clear from the table above, the clad contact of the example has a nearly straight flow line at the joint of the contact material, and is almost uniform and stable with little variation in tension over the entire surface. The contact material is thinner than conventional clad contacts, with the contact material covering the entire surface by 0.6 mm.
It takes about 10% less to keep more than that. As detailed above, in the rivet type clad contact of the present invention, the flow line at the joint between the contact material and the base material is substantially straight, the tension of the contact material is substantially uniform over the entire surface, and the tension of the contact material is It can be said to be an epoch-making product that can replace the conventional rivet-type clad contacts because it requires only the minimum necessary amount and saves contact materials.
【図面の簡単な説明】[Brief explanation of the drawing]
第１図はａ，ｂは従来のリベツト型のクラツド
接点の断面図、第２図ａ，ｂは本発明の−実施例
であるリベツト型のクラツド接点を作る工程を示
す図である。
１……接点材、２′……ベース材、３……リベ
ツト型のクラツド接点。
1A and 1B are sectional views of a conventional rivet type clad contact, and FIGS. 2A and 2B are diagrams showing the process of making a rivet type clad contact according to an embodiment of the present invention. 1...Contact material, 2'...Base material, 3...Rivet type clad contact.