| 摘要 |
There is disclosed a hand-held portable tool which is driven by an electric motor from a source of electricity. The tool has a housing for the motor which has a commutator which extends into a hollow handle. The hollow handle has mounted therein a printed-circuit board having electrically conductive pathways. An electric switch is mounted on the board and incorporates a bridging element which engages contact terminals on the printed-circuit board when the switch is manually actuated thereby closing the electric circuit of the tool motor. In this way, separate electrical connections to the switch assembly per se are avoided and substantial time in assembly of the tool is saved. |
