| 摘要 |
A movable, rigid, resiliently- mounted bridging contact member 2 carries contacts 5 and 6 which are separable from fixed contacts 7 and 8 preferably by the action of cam 12 on plunger 10 to lift the member 2 against the springs 3. The contacts 6 and 8 are domed to meet over a central region but, to give stability to the bridge member 2 about its longitudinal axis, the contact 5 is shaped to engage the contact 7 at two points spaced apart across the longitudinal axis. Thus the bridge member 2 has a triangular three- point support. <IMAGE> |
