| 摘要 |
An electric jigsaw ( 1 ) includes a main housing ( 2 ) containing a gear housing ( 10 ), a reciprocating rod ( 11 ) vertically projecting from within the gear housing, a saw blade ( 13 ) coupled to the rod via a coupling ring ( 12 ), and a transparent synthetic resin guard ( 14 ) provided at the lower front end of the main housing and the gear housing ( 10 ). The transparent guard includes a vertical optical path therethrough and is attached to the gear housing in such a manner as to be horizontally rotatable between a protective position for covering the coupling ring and an open position for exposing the coupling ring. Additionally included in the jigsaw is an insulating cover ( 15 ) assembled to the gear housing ( 10 ) within the main housing ( 2 ) and a downward oriented light-emitting diode ( 19 ) disposed at the bottom end of the insulating cover ( 15 ) directly above the transparent guard ( 14 ) when the guard is in its protective position. The light from the LED is transmitted through the front guard along the optical path, illuminating a workpiece (W) immediately forward of the blade without significant scattering or diffusion.
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