Patent ID: 6534885
Filing Date: 2003-03-18
Classification: H01M,H01R,H02J,Y02E

Abstract:
An adapter for supplying DC voltage from a DC power source unit, which converts AC voltage into DC voltage, to cordless power tools that have different rated voltages, each power tool having a battery holding space, the adapter comprising:a cord adapted to connect to the DC power source unit in order to receive DC voltage from the DC power source unit; a fitting portion for insertion into the battery holding space of any one of the cordless power tools, the fitting portion receiving the DC voltage received through the cord and supplying the DC voltage to a cordless power tool in which the fitting portion is properly inserted; a voltage setting unit for setting voltage supplied through the fitting portion to the cordless power tool; and a fitting prevention mechanism operating in linked association with operation of the voltage setting unit to prevent proper insertion of the fitting portion into a cordless power tool that has a rated voltage different from the voltage set by the voltage setting unit.