Patent ID: 7616082
Filing Date: 2009-11-10
Classification: H01H

Abstract:
1. An electromagnetic relay comprising: a base, an electromagnet disposed on said base, an armature supported rotatably by said base so as to swing in response to excitation/non-excitation of said electromagnet, a plurality of movable springs, one end of each of said movable springs having a movable contact and the opposite end of each of them being secured to said base, a plurality of fixed contacts, each of said fixed contacts being disposed opposite to each of said movable contacts to constitute a contact mechanism together with the corresponding movable contact, a card having a coupling part to be coupled to said armature and a plurality of insertion holes to which the one end of each of said movable springs is inserted, said card elastically deforming said movable springs in conjunction with a swing motion of said armature to selectively open or close the contact mechanisms, wherein each of said movable springs has a U-shaped hook formed by bending said one end of each of the movable springs toward the opposite end side, said one end of each of the movable springs being configured to be able to pass through said insertion hole while being pushed by an inner surface of said insertion hole and being deformed elastically, said insertion holes comprising a first insertion hole and a second insertion hole, said first insertion hole having a step on an inner surface thereof and said hook of said movable spring inserted into the first insertion hole being engaged with a surface of said step opposite to a side from which said one end of the movable spring is inserted, said second insertion hole having no step to which said hook of each of said movable springs is engaged and said card not being restrained by said hook inserted into said second insertion hole.