Patent ID: 7563997
Filing Date: 2009-07-21
Classification: H01H,Y10T

Abstract:
1. A rolling-ball switch, comprising: an insulative casing part including a first connecting face, a second connecting face opposite to said first connecting face, and an intermediate through hole extending from said first connecting face to said second connecting face; an insulative first covering part having a first recessed inner side covering said first connecting face; an insulative second covering part having a second recessed inner side covering said second connecting face, said first and second recessed inner sides and said intermediate through hole cooperatively defining a chamber; two metal plates respectively disposed between said first covering part and said first connecting face and between said second covering part and said second connecting face, each of said metal plates including an outer peripheral edge, and an inner peripheral edge surrounded by said outer peripheral edge and defining a through hole that communicates with said intermediate through hole, said inner peripheral edge having an edge portion projecting into said chamber; and a conductive ball disposed movably in said chamber, and having a diameter larger than a distance between said edge portions of said metal plates so that said conductive ball can bridge said edge portions of said metal plates to place said rolling-ball switch in an ON state.