Patent ID: 7102473
Filing Date: 2006-09-05
Classification: H01H

Abstract:
1. A micro relay comprising: a body having an electromagnetic mechanism, said body being made of silicon or glass; a cover made of silicon or glass; an armature block made of silicon, said armature block being composed of an armature base and a frame, said frame surrounding an entire circumference of said armature base and supports said armature base pivotally, said armature base being cooperative with a magnetic material on a surface of said armature base to define an armature; a contact mechanism having a fixed contact and a movable contact which are selectively closed and opened by a pivot motion of said armature; wherein said frame is directly bonded over its entire circumference to a periphery of said body and to a periphery of said cover to define a sealed space surrounded by said frame and closed between said body and said cover for accommodating said armature and said contact mechanism, said electromagnetic mechanism having a yoke which forms a magnetic path of a magnetic field generated upon being energized, said body having an opening extending from an upper surface of the body to an undersurface of the body, one end of said opening on the upper surface side being closed by a thin film to form a recess for accommodating said yoke in the undersurface of the body, said thin film being made of silicon or glass and being closely bonded to the body to isolate said sealed space from said recess.