초록 ▼

A cordless modular power tool having a battery module, a motor module and a tool module that can be a saw, drill, toothbrush, flosser and the like. First and second electrical plug units are situated on the battery and motor modules respectively. The battery module plug unit is used in a d.c. mode t

A cordless modular power tool having a battery module, a motor module and a tool module that can be a saw, drill, toothbrush, flosser and the like. First and second electrical plug units are situated on the battery and motor modules respectively. The battery module plug unit is used in a d.c. mode to supply d.c. current to the motor and in an a.c. mode to receive a.c. current for charging the battery. Switching between the two modes is accomplished during plugging and unplugging of the two modules by locating a magnet in the motor module which influences an actuator arm in battery module to do the switching.

대표청구항 ▼

[ What is claimed is:] [1.] A cordless power tool having a battery module containing a battery, and a motor module containing a d.c. motor, the improvement comprising:first and second mating plug units, each having two terminals, mounted on the battery and motor modules, respectively, the first mati

[ What is claimed is:] [1.] A cordless power tool having a battery module containing a battery, and a motor module containing a d.c. motor, the improvement comprising:first and second mating plug units, each having two terminals, mounted on the battery and motor modules, respectively, the first mating plug unit comprising a pair of male terminals and the second mating plug unit comprising a pair of female terminals for receiving said male terminals; andmeans for placing the male terminals of the first plug unit (i) in an a.c. mode when unplugged from the second plug unit so as to be enabled to conduct a.c. current from an a.c. power main to charge said battery and (ii) in a d.c. mode when plugged to the second plug unit so as to be enabled to conduct d.c. current from the battery to the motor via the second plug unit terminals.