High-durability electrical contact structure

Abstract

A high-durability electrical contact structure may include a first contact and a second contact disposed to face each other while being spaced apart a predetermined distance from each other. A portion of the second contact includes a magnetic material. Damage to the surfaces of an arcing electrical contact according to arc generation positions between contacts is minimized, increasing the life of the arcing electrical contact.

What is claimed is: 
     
         1 . A high-durability electrical contact structure comprising:
 a first contact and a second contact disposed to face each other while being spaced apart a predetermined distance from each other,   wherein the second contact includes a magnetic material.   
     
     
         2 . The high-durability electrical contact structure of  claim 1 ,
 wherein the second contact includes:
 a second rivet portion forming a body of the second contact; and 
 a second contact portion provided on an end portion of the second rivet portion to face the first contact, and 
   wherein the magnetic material is included in the second rivet portion of the second contact.   
     
     
         3 . The high-durability electrical contact structure of  claim 2 , wherein the magnetic material of the second rivet portion includes a ferromagnetic material or a magnetized alloy including the ferromagnetic material. 
     
     
         4 . The high-durability electrical contact structure of  claim 3 , wherein the second rivet portion includes a plating made from one or more selected from among Ag, Cu, Sn, and Ni. 
     
     
         5 . The high-durability electrical contact structure of  claim 3 , wherein a central axis of the first contact and a central axis of the second contact are disposed concentrically. 
     
     
         6 . The high-durability electrical contact structure of  claim 2 , wherein the magnetic material is a magnetic core fused inside the second rivet portion and disposed coaxially with a central axis of the second rivet portion of the second contact. 
     
     
         7 . The high-durability electrical contact structure of  claim 2 , wherein the magnetic material is a magnetic core disposed in the second rivet portion to be eccentric from a central axis of the second rivet portion in an axial direction of the second rivet portion in parallel to the central axis of the second rivet portion of the second contact. 
     
     
         8 . The high-durability electrical contact structure of  claim 2 , wherein the second contact further includes a top recess opening at a center portion of a top surface of the second contact portion, and the magnetic material is a magnetic core inserted into the top recess and disposed coaxially with a central axis of the second rivet portion of the second contact. 
     
     
         9 . The high-durability electrical contact structure of  claim 2 , wherein the second contact further includes a bottom recess opening at a center portion of a bottom surface of the second contact portion, and the magnetic material is a magnetic core inserted into the bottom recess and disposed coaxially with a central axis of the second rivet portion of the second contact. 
     
     
         10 . The high-durability electrical contact structure of  claim 2 , wherein the magnetic material is a magnetic core inserted and disposed between the second rivet portion and the second contact portion. 
     
     
         11 . The high-durability electrical contact structure of  claim 2 , wherein a contact surface of the second contact portion is not in parallel to a contact surface of the first contact. 
     
     
         12 . The high-durability electrical contact structure of  claim 11 , wherein a central axis of the first contact is not in parallel to a central axis of the second contact. 
     
     
         13 . The high-durability electrical contact structure of  claim 11 , wherein a central axis of the first contact and a central axis of the second contact are disposed coaxially, and the contact surface of the second contact portion is inclined with respect to a surface in parallel to the contact surface of the first contact. 
     
     
         14 . A high-durability electrical contact structure comprising:
 a first contact and a second contact disposed to face each other while being spaced apart a predetermined distance from each other; and   an external magnetic material surrounding the second contact.   
     
     
         15 . The high-durability electrical contact structure of  claim 14 ,
 wherein the second contact includes:
 a second rivet portion forming a body of the second contact; 
 a second head having a decreased diameter being provided on an end portion of the second rivet portion; and 
 a second contact portion provided on an end portion of the second head to face the first contact, 
   wherein the high-durability electrical contact structure further including a lead tab coupled to a side surface of the second rivet portion, and   wherein the external magnetic material is disposed between the lead tab and the second head.   
     
     
         16 . The high-durability electrical contact structure of  claim 14 ,
 wherein the second contact includes a second rivet portion forming a body of the second contact and a second contact portion provided on an end portion of the second head to face the first contact,   wherein the high-durability electrical contact structure further including a lead tab coupled to a side surface of the second rivet portion, and   wherein the external magnetic material is disposed below the lead tab to surround the second rivet portion of the second contact.   
     
     
         17 . The high-durability electrical contact structure of  claim 14 , wherein the external magnetic material is a lead tab coupled to a side surface of the second contact. 
     
     
         18 . A high-durability electrical contact structure comprising:
 a first contact and a second contact disposed to face each other while being spaced apart a predetermined distance from each other; and   a solenoid disposed adjacent to the first contact and the second contact to generate magnetic force between a contact surface of the first contact and a contact surface of the second contact.   
     
     
         19 . The high-durability electrical contact structure of  claim 18 , wherein the solenoid includes a pair of coils, winding axes of which are disposed in parallel to each other. 
     
     
         20 . The high-durability electrical contact structure of  claim 18 , wherein the solenoid includes a pair of coils, winding axes of which are disposed side by side in a predetermined direction thereof.