【発明の詳細な説明】[Detailed description of the invention]
本発明は、クラツド接点例えばリベツト型、ボ
タン型或いは端子材に取付けられたクラツド接点
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、圧接と同時にクラツド接点に成形する場合
及び予め接合したクラツド接点材をクラツド接点
に成形する場合は、第１図ａに示すようになり、
またクラツド接点材及び両面使用のリベツト型の
クラツド接点を端子材に取付けると同時にクラツ
ド接点に成形する場合は、同図ｂ，ｃに示すよう
になり、いずれも接点材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、接点材
の張厚が全面略均一なクラツド接点を提供せんと
するものである。
本発明のクラツド接点は、Ag―Ni，Ag―Cu
等のAg合金やAg―CdO，Ag―SnO2等のAs―酸
化物系の接点材が、CuにAl2O3，MgO，TiO2，
Cr2O3の一種を0.05〜１重量％添加したベース材
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クラツド接点は、ベース材
にCuの代わりにCuにAl2O3，MgO，TiO2，
Cr2O3の一種を0.05〜１重量％添加したCu複合材
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
略均一なクラツド接点３となるものである。
尚、このことは予め接点材１とベース材を接合
したクラツド接点材をクラツド接点に成形する場
合、またクラツド接点材あるいは両面使用のリベ
ツト型のクラツド接点を端子材に取付けると同時
に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、Cuに
Al2O3，MgO，TiO2，Cr2O3の一種を0.05〜１重
量％添加した理由は、0.05重量％未満ではベース
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、上限
値を超えると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
―Al2O3 0.3重量％より成るベース材２′の上面
に、直径2.5mm，高さ2.3mmのAg―CdO12重量％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1.3mm
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
成形して実施例と同一寸法の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 provides a clad contact, such as a rivet type, a button type, or a clad contact attached to a terminal material, using Ag, an Ag alloy, or an Ag alloy as the contact material.
Most of them were manufactured using oxides and Cu as the base material. By the way, Ag alloys such as Ag-Ni, Ag-Cu and Ag
Clad contacts are made by bonding a contact material made of Ag-oxide such as -CdO, Ag-SnO 2 , etc. to a Cu base material.
Since there is a difference in hardness and elongation between the contact material and the Cu base material, when forming the contact material into a clad contact at the same time as pressure welding, or when forming a clad contact material that has been bonded in advance into a clad contact, the method shown in Figure 1a is shown in Figure 1a. It became like this,
When a clad contact material and a double-sided rivet type clad contact are attached to a terminal material and simultaneously formed into a clad contact, the result is as shown in Figures b and c, in which the contact material 1 and the Cu base material 2 There was a problem that the flow line at the joint with the contact material 1 was not straight, and the center part of the contact material 1 was thick and the peripheral part was thin. The present invention solves these problems and provides a clad contact in which the flow line at the joint between the contact material and the base material is substantially straight, and the tension of the contact material is substantially uniform over the entire surface. The clad contacts of the present invention include Ag-Ni, Ag-Cu
Ag alloys such as Ag alloys and As -oxide contact materials such as Ag-CdO, Ag-SnO 2 , etc.
It is characterized by being bonded and molded to a base material to which 0.05 to 1% by weight of a type of Cr 2 O 3 is added. In this way, the clad contact of the present invention uses Al 2 O 3 , MgO, TiO 2 , Cu, Al 2 O 3 , MgO, TiO 2 ,
Since a Cu composite material containing 0.05 to 1% by weight of a type of Cr 2 O 3 is used, the base material is an Ag alloy with high hardness and low elongation, and an Ag-oxide contact material with hardness and low elongation.
For example, when the contact material 1 and base material 2' are cold-welded as shown in FIG. 2a and formed into a rivet-type clad contact as shown in FIG. 2a, the contact material 1 and base material 2' are combined. The flow line at the joint with the contact member 1 is substantially straight, resulting in a clad contact 3 in which the tension of the contact material 1 is substantially uniform over the entire surface. This is true when molding a clad contact material in which the contact material 1 and the base material are bonded in advance into a clad contact, or when a clad contact material or a rivet-type clad contact that uses both sides is attached to a terminal material and simultaneously formed into a clad contact. The same applies when doing so. In the base material 2' of the above Cu alloy, Cu
The reason for adding 0.05 to 1% by weight of one of Al 2 O 3 , MgO, TiO 2 , and Cr 2 O 3 is that if it is less than 0.05% by weight, the hardness of the base material is insufficient. The contact material 1 stretches before the contact material 1, and the flow line at the joint between the contact material 1 and the base material 2' is not a straight line.As with conventional clad contacts, the center part of the contact material 1 is thick and the peripheral part is thick. This is because the Cu alloy becomes thinner, and if the upper limit is exceeded, the workability of the Cu alloy decreases significantly. Next, in order to clarify the effects of the clad contact of the present invention, specific examples and conventional examples thereof will be described. [Example] As shown in Figure 2a, a Cu plate with a diameter of 2.5 mm and a height of 5 mm
- After overlaying the contact material 1 made of Ag-CdO 12 % by weight with a diameter of 2.5 mm and height of 2.3 mm on the upper surface of the base material 2' made of 0.3% by weight of Al 2 O 3, the contact material 1 was placed in a cold state as shown in Figure b. Formed at the same time as pressure welding, head diameter 4.7mm, head height 1.3mm
A rivet type 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. A rivet type clad contact having the same dimensions as the example was obtained. However, when we measured the flow line of the joint part and the variation in the tension over the entire surface of 100 contact materials of each of the clad contacts of these examples and the conventional example, 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15％少なくて済むものであ
る。
以上詳記した通り本発明のクラツド接点は、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 15% less to keep more than that. As detailed above, in the 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 the minimum required thickness. It can be said to be an epoch-making product that can replace conventional clad contacts because it saves contact material.
【図面の簡単な説明】[Brief explanation of the drawing]
第１図ａ，ｂ，ｃ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は本発明の一実施
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, 1B, and 1C are cross-sectional views of a conventional rivet type clad contact, and FIGS. 2A and 2B are diagrams showing a process for 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.