Patent ID: 7872551
Filing Date: 2011-01-18
Classification: H01H

Abstract:
1. A relay comprising: a contact point block comprising: an electromagnetic unit that directly fixes an iron core to upper end faces of a plurality of supporting posts projected at the corners of the upper surface of the contact point base; a base block having a fixed contact point at a position opposite to the movable contact point so as to be able to be contacted with and separated from the movable contact point, wherein the plunger is alternately attracted to and separated from the iron core of the electromagnetic unit based on excitation and nonexcitation of the electromagnetic unit such that the movable contact point is contacted with and separated from the fixed contact point, wherein the movable iron piece is supported on the supporting shaft so as to be rotatable, wherein the plunger is inserted through an operation hole of the contact point base so as to be movable up and down, wherein the plunger has the movable contact point at a lower end portion protruding from a lower surface of the contact point base, wherein upper and lower surfaces of the contact point block are held by the electromagnetic unit and the base block, and wherein the lower surface of the contact point base constituting the contact point block and the upper faces of the plurality of supporting posts are respectively sandwiched between the base block and the electromagnetic unit.