Patent ID: 8471161
Filing Date: 2013-06-25
Classification: H01H

Abstract:
1. A rolling-ball switch comprising: a housing having a surrounding wall that defines an axial hole and that includes two opposite open ends, said surrounding wall having an inner surface formed with two spaced-apart first annular recesses which are proximate to said open ends, respectively, and two spaced-apart second annular recesses which are respectively adjacent to said first annular recesses but which are distal from said respective open ends, each of said second annular recesses having a depth from said inner surface larger than that of said first annular recesses; two metallic terminals plugged in said axial hole respectively from said open ends, each of said metallic terminals having an insert portion inserted into said axial hole, and axially spaced-apart first and second barbed surfaces formed annularly around said insert portion, said first barbed surface being engaged to a respective one of said first annular recesses, said second barbed surfaces of said metallic terminals being engageable respectively with said second annular recesses when said metallic terminals expand due to heat; and at least one ball member disposed rollably in said axial hole to contact said metallic terminals.