Impact tool

An impact tool, comprising:

• an electric motor comprising a drive shaft rotating about a first axis;
• an output shaft for outputting torque;
• an impact mechanism for applying an impact force to the output shaft, wherein the impact mechanism comprises an impact block driven by the drive shaft and a hammer anvil receiving an impact from the impact block, and the hammer anvil is formed with or connected to the output shaft;
• and
• a controller configured to control the electric motor and, when the impact tool is in a low-speed mode and it is detected that the impact mechanism applies an impact force to the output shaft, control the electric motor to periodically shut down and start running at a duty cycle of less than or equal to 40%.

An impact tool, comprising:

• an electric motor comprising a drive shaft rotating about a first axis;
• an output shaft for outputting torque;
• an impact mechanism for applying an impact force to the output shaft, wherein the impact mechanism comprises an impact block driven by the drive shaft and a hammer anvil receiving an impact from the impact block, and the hammer anvil is formed with or connected to the output shaft;
• and
• a controller configured to control the electric motor and, when the impact tool is in a low-speed mode and a load parameter exceeds a preset parameter threshold, periodically:
• determine that a condition is satisfied that the impact mechanism impacts a preset number of times, and control the electric motor to shut down for a preset period and then restart.