Patent ID: 8174353
Filing Date: 2012-05-08
Classification: H01C

Abstract:
1. A varistor apparatus comprising: a base case including a bottom and lateral walls bent upwardly from the edges of the bottom; a varistor including a main body, a front electrode plate welded to a front surface of the main body, and a rear electrode plate welded to a rear surface of the main body, the rear electrode plate being disposed adjacent to the bottom of the base case; a front terminal member projected at one end thereof to the outside of the base case and disposed at the other end thereof inside the base case; a rear terminal member projected at one end thereof to the outside of the base case and disposed at the other end thereof inside the base case so as to joined to the rear electrode plate; a tension bar joined at one end thereof to the other end of the front terminal member and thermally welded at the other end thereof to the front electrode plate, the tension bar having a restoring force for allowing the other end of the tension bar to be far away from the front electrode plate; and a cover case joined to the base case.