| 摘要 |
An electrical switch adapted to monitor relative axial movement between the first member and a second member, the switch including an electrically nonconductive housing supporting a plurality of electrical conductors, a first sliding block having a ramp surface thereon mounted on one of the first and second members, a bus bar mounted on the first sliding block and having piercing elements thereon, and a second sliding block having a ramp surface thereon in sliding engagement with the ramp surface on the first sliding block, the second block being rigidly connected to the other of the first and second members. In response to relative axial movement between the members, the second sliding block wedgingly moves the first sliding block to a position wherein the piercing elements breach the housing and simultaneously contact each conductor so that an electrical potential on any one conductor is applied to all of the conductors.
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