| 摘要 |
PROBLEM TO BE SOLVED: To provide a compact, light power tool that can cope with large power, and can use both batteries and AC power supplies as a power supply. SOLUTION: The power tool has a connection section for selectively, electrically, and mechanically connecting a cordless power supply device 15 incorporating a battery cell to a power supply device 16 having cords incorporating a means for converting current from an AC power supply to DC. In the DC motor 5, rotor coil winding is in multiple winding corresponding to the power supply devices having a different supply voltage. A power supply path from a cordless power supply device and that from a power supply device having cords are separated, and separate switches 20a, 20b that are opened or closed by the operation of a single operation section 21 are arranged at each power supply path. A control circuit C for driving a DC motor by power from the cordless power supply device and a control circuit Cb for driving the DC motor by power from the power supply device having cords perform drive control in different drive systems. COPYRIGHT: (C)2004,JPO&NCIPI
|
