Patent ID: 11890730
Assignee: MAKITA CORPORATION
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A driver drill comprising:
a motor housing that holds an electric motor, an axis of rotation of a rotor of the electric motor extending in a front-rear direction of the driver drill;
a grip housing having an upper end connected to a lower part of the motor housing; and
an enlarged-part housing connected to a lower end of the grip housing and being spaced from the motor housing in an up-down direction of the driver drill that is perpendicular to the front-rear direction,
wherein:
the driver drill is shiftable between a setting unlocked state in which an electronically settable setting of the driver drill is changeable by an electric signal and a setting locked state in which the electronically settable setting of the driver drill is not changeable;
the electronically settable setting of the driver drill is a torque threshold setting;
the driver drill includes a torque-threshold-setting interface circuit board configured to set the torque threshold of the driver drill;
the electric signal is a torque input signal;
the driver drill is shiftable between the setting unlocked state and the setting locked state by electronically switching the torque-threshold setting interface circuit board between a torque-threshold-setting unlocked state in which the torque threshold setting of the driver drill is changeable in response to a receipt of the torque input signal and a torque-threshold-setting locked state in which the torque threshold setting of the driver drill is not changeable in response to the receipt of the torque input signal; and
the torque-threshold-setting interface circuit board is configured to electronically switch from the torque-threshold-setting unlocked state to the torque-threshold-setting locked state after a predetermined time has elapsed from an initiation of the torque-threshold-setting unlocked state.