Abstract: A hub motor assembly includes a traveling wheel, an outer rotor motor and a deceleration mechanism. An inside of the traveling wheel is provided with an inner ring gear, the outer rotor motor is arranged inside the traveling wheel, and an outside of the outer rotor motor is provided with an outer ring gear. The deceleration mechanism includes a planetary carrier and at least one planetary gear, and the planetary carrier is arranged between the traveling wheel and the outer rotor motor. The planetary gear is rotatably mounted on the planetary carrier, and the planetary gear is internally meshed with the outer ring gear and externally meshed with the inner ring gear. The outer rotor motor drives the planetary gear to rotate through the outer ring gear, and the planetary gear drives the inner ring gear to rotate and then drives the traveling wheel to rotate.

Abstract: The disclosure provides an electric drill comprising: a housing; a motor for driving the electric drill to work; an output assembly for outputting the power of the motor; a first brake assembly including a driving disc and a driven disc respectively arranged on the transmission shaft and the output shaft, the driving disc being meshed with the driven disc to transmit power in a non-braking state, and the driving disc and the driven disc being displaced in the axial direction to be separated from each other in a braking state to stop transmitting power; and a second brake assembly including a mass block and a micro switch connected with the motor, and in a braking state, the mass block displacing and triggering the micro switch to stop the motor.

Abstract: A chain saw includes a housing, a motor, a chain saw bar assembly, a tensioning assembly set on the housing, and an adjustment assembly set on the side cover corresponding to the tensioning assembly. The chain saw bar assembly is detachably connected to the first housing through the combination of the tensioning assembly and the elastic components, the adjustment assembly is movably connected with the tensioning assembly, and the adjustment assembly can adjust the relative position of the tensioning assembly and the guide shaft, to tension the chain set on the circumferential direction of the guide bar and tightly lock the chain saw bar assembly between the first housing and the side cover.

Abstract: The present invention provides a chain saw, which includes a housing, a driving assembly mounted on the housing, a guide plate extending outward from the housing, a chain arranged on the guide plate and driven by the driving assembly, and a tension assembly for tightening the chain. The tension assembly includes an operating member and a driving member driven by the operating member, the driving member cooperates with the guide plate, and when a driving force is applied to the operating member, the driving member is driven and the guide plate is moved to tension the chain, and after the chain is tensioned, if the driving force is continuously applied to the operating member, the operating member disengages with the driving member, and the operating member continues to move to compress the guide plate.

Abstract: The disclosure provides an electric drill comprising: a housing; a motor for driving the electric drill to work; an output assembly for outputting the power of the motor; a first brake assembly including a driving disc and a driven disc respectively arranged on the transmission shaft and the output shaft, the driving disc being meshed with the driven disc to transmit power in a non-braking state, and the driving disc and the driven disc being displaced in the axial direction to be separated from each other in a braking state to stop transmitting power; and a second brake assembly including a mass block and a micro switch connected with the motor, and in a braking state, the mass block displacing and triggering the micro switch to stop the motor.

Abstract: The disclosure provides a chain saw including a housing, a motor, a chain saw bar assembly, a tensioning assembly set on the housing, and an adjustment assembly set on the side cover corresponding to the tensioning assembly. The chain saw bar assembly is detachably connected to the first housing through the combination of the tensioning assembly and the elastic components, the adjustment assembly is movably connected with the tensioning assembly, and the adjustment assembly can adjust the relative position of the tensioning assembly and the guide shaft, to tension the chain set on the circumferential direction of the guide bar and tightly lock the chain saw bar assembly between the first housing and the side cover.

Abstract: The present invention provides a chain saw, which includes a housing, a driving assembly mounted on the housing, a guide plate extending outward from the housing, a chain arranged on the guide plate and driven by the driving assembly, and a tension assembly for tightening the chain. The tension assembly includes an operating member and a driving member driven by the operating member, the driving member cooperates with the guide plate, and when a driving force is applied to the operating member, the driving member is driven and the guide plate is moved to tension the chain, and after the chain is tensioned, if the driving force is continuously applied to the operating member, the operating member disengages with the driving member, and the operating member continues to move to compress the guide plate.