ELECTRIC POWER TOOL

Japanese Patent JP2023155044

A

To provide an electric power tool with an electric power tool power supply device capable of effectively utilizing each battery, where the electric power tool can be loaded with multiple batteries.SOLUTION: An electric power tool with an electric power tool power supply device comprises: a second voltage supply unit capable of supplying, based on a first power supply voltage supplied from a first battery, a second operating voltage for operating a second control unit, and capable of supplying, based on a second power supply voltage supplied from a second battery, a second operating voltage for operating the second control unit; a first voltage line configured to connect a first voltage supply unit and the second voltage supply unit and capable of supplying the first power supply voltage; a second voltage line configured to connect the first voltage supply unit and the second voltage supply unit and capable of supplying a second voltage lower than the first power supply voltage; and a backflow prevention circuit in the first voltage line capable of permitting a current to flow from the first voltage supply unit to the second voltage supply unit and capable of preventing a current from flowing from the second voltage supply unit to the first voltage supply unit.SELECTED DRAWING: Figure 3

WO/1999/053804	INTERCHANGEABLE GRIPS FOR POWER HAND TOOLS
JP2022057464	MOTOR DEVICE, AND POWER TOOL
JP2011011300	CARRIER

IWAKI KOZO
NAGAI NORIHIRO
HASHIMOTO TAKAHIRO

JP2022064774A

October 20, 2023

April 08, 2022

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MAX CO LTD

B25F5/00; H02P4/00

Yoshiyuki Inaba
Toshifumi Onuki
Akihiko Eguchi
Kazuhiko Naito

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