Patent ID: 7482900
Filing Date: 2009-01-27
Classification: H01H

Abstract:
1. A micro relay comprising: a base substrate having an electromagnetic device, said base substrate having a fixed contact on one surface thereof; an armature block including a frame secured to the surface of said base substrate, a movable plate disposed inside said frame and supported rotatably by said frame, and a movable contact base supported by said movable plate and having a movable contact, said movable plate cooperating with a magnetic material provided on a surface of said movable plate to define an armature and being driven by said electromagnetic device to switch on/off a connection between said fixed contact and said movable contact; a cover bonded to said frame, said cover creating a space surrounded by said frame and closed between said base substrate and the cover to accommodate said armature and said fixed contact; wherein said base substrate has a storage recess for accommodating said electromagnetic device, said storage recess being composed of a hole extending from the one surface of said base substrate to a rear surface thereof and a thin storage recess lid fixed on the one surface of said base substrate to close said hole, said electromagnetic device including a yoke, a coil wound around said yoke to generate a flux in response to an exciting current, and a permanent magnet secured to said yoke to generate a flux flowing through said armature and said yoke.