| 摘要 |
A reciprocating hand saw ( 10 ), having a motor housing ( 16 ) and a gearbox ( 28 ) that receive a battery-operated direct-current motor ( 18 ) with a motor shaft having a shaft end ( 22 ) and a gear ( 28 ), respectively, which gear-as known per se in reciprocating saws-is connected to the shaft end in a way driven to rotate and whose gear input pinion ( 26 ) converts the rotation of the motor shaft end ( 22 ) into an up-and-down motion of a push rod ( 34 ) that carries a sawblade ( 38 ), can be produced economically and is especially sturdy because the gear ( 28 ) and its gearbox ( 14 ) originate in a reciprocating saw that can be operated by alternating current, and because between the shaft end ( 22 ) and the gear input pinion ( 26 ), a multi-stage coupling ( 24 ), disposed in a manner fixed against relative rotation for transmitting torque, comprises parts that can be easily separated from one another.
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