Chain saw

摘要

A chain saw includes: a motor driven by electric power; a housing configured to accommodate the motor; a guide bar attached to the housing; a chain blade wound around the guide bar; a sprocket engaged with the chain blade to drive the chain blade, wherein the chain saw is configured to transmit a driving force of the motor to the sprocket via a clutch mechanism, wherein the chain saw comprises a shut-off switch for detecting an actuation of the clutch mechanism and is configured such that the power supply to the motor is stopped when the actuation of the clutch mechanism is detected by the shut-off switch so as to brake electrically. The electrical brake is provided together with a mechanical brake that is configured to work when a hand guard is rotated.

主权项

1. A chain saw comprising:
a motor driven by electric power; a housing configured to accommodate the motor; a guide bar attached to the housing; a chain blade driven by the motor and wound around the guide bar; a sprocket engaged with the chain blade to drive the chain blade; a trigger switch; and a control device connected to the trigger switch and configured to control rotation of the motor,
wherein a driving force of the motor is configured to be transmitted to the sprocket via a clutch mechanism,wherein the chain saw comprises a clutch state detection unit configured to detect an actuation of the clutch mechanism, andwherein the power supply to the motor is stopped when the actuation of the clutch mechanism is detected by the clutch state detection unit,wherein the clutch state detection unit is connected to the control device,wherein the control device is configured to shut off the power supply to the motor when an operation of the clutch state detection unit is detected by the control device, andwherein the control device is configured to release the shut-off of the power supply upon detecting that the operation of the trigger switch is released after the shutoff of the power supply to the motor.