Patent ID: 8674640
Filing Date: 2014-03-18
Classification: B25B,B25D

Abstract:
1. An electric power tool provided with a plurality of operation modes, the tool comprising: a motor configured to drive a tool output shaft, the tool output shaft being configured to receive a tool element, a manipulation input receiving unit configured to receive, from a user, a manipulation input used to indicate a manipulation variable for operating the motor, a mode changeover unit comprising a manipulation portion by which, through operation of a single switch, the user can select one of the plurality of operation modes, and that causes the electric power tool to switch to operate in an operation mode selected by the user, the selected operation mode corresponding to (i) a selected control parameter of a plurality of control parameters for operating the motor and (ii) a corresponding selected transmission mechanism of a plurality of transmission mechanisms; a rotation drive force transmitting unit that transmits a rotation drive force of the motor to the tool output shaft and includes a plurality of types of transmission mechanisms that differ in transmission methods, the rotation drive force transmitting unit being configured to switch to the selected one of the transmission mechanisms of the plurality of transmission mechanisms corresponding to the selected operation mode in conjunction with manipulation of the manipulation portion, thereby to transmit the rotation drive force of the motor to the tool output shaft via the selected one of the transmission mechanisms; an electric signal output unit that outputs an electric signal corresponding to the selected operation mode; a setting change manipulation unit configured to receive user input selecting a selected control value for the selected control parameter, wherein the setting change manipulation unit is configured to enable selection of different control values depending on the selected operation mode; and a motor control unit that sets a control method of the motor to a selected control method of a plurality of different types of control methods, based on the electric signal, wherein the motor control unit controls the motor by the selected control method, based on the manipulation input, the selected control parameter, and the selected control value.