Patent ID: 8963663
Filing Date: 2015-02-24
Classification: H01H

Abstract:
1. A contact switching device that drives a contact mechanical portion arranged inside a sealed space to perform contact switching, based on excitation and degauss of an electromagnet portion arranged outside the sealed space, wherein a ceramic plate holding a fixed contact terminal of the contact mechanical portion is bonded to and integrated with an upper opening edge portion of a metal cylindrical flange, while a plate-like yoke is bonded to and integrated with a lower opening edge portion opposed to the upper opening edge portion to form the sealed space; wherein a pair of permanent magnets is arranged on opposed inner surfaces of the metal cylindrical flange, and are configured so that magnetic forces of said pair of magnets extend a generated arc, and the metal cylindrical flange is brazed to an upper-surface circumferential edge portion of the ceramic plate and an opening edge portion on lower side of the metal cylindrical flange is integrated with upper surface of the plate-like yoke, by brazing.