Abstract: A backpack blower includes a blower device, a power supply, and a backpack device. The backpack device includes a device body and a strap assembly. The strap assembly is worn by a user. The strap assembly has a first center plane, and the center of gravity of the power supply and the blower device are separately located on two sides of the first center plane.

Abstract: A blower includes a motor, a fan driven by the motor to rotate about a first axis, a power supply device, and a housing assembly accommodating the motor and including an inner duct and an outer duct assembly. The inner duct is formed with an inner air inlet. The outer duct assembly surrounds the inner duct. The outer duct assembly includes an outer duct and a hood, where the outer duct is disposed on a front side of the hood, an outer air outlet is formed at an end of the outer duct facing away from the hood, an outer air inlet is formed on the hood and has a front end portion and a rear end portion along a direction of the first axis, and the inner air inlet is disposed between the front end portion and the rear end portion along the direction of the first axis.

Abstract: A riding mowing device includes a seat, a frame, a cutting assembly, a walking assembly, a power supply assembly, and a steering wheel assembly. The cutting assembly includes a cutting deck and a mowing element. The cutting assembly is mounted to the frame. The walking assembly is used for driving the riding mowing device to walk. The power supply assembly is used for powering at least the cutting assembly and the walking assembly and mounted to the frame. The steering wheel assembly includes a steering wheel for the user to operate and a support rod connecting the steering wheel to the frame. The riding mowing device further includes a mounting assembly including a locked position and an unlocked position, where when the mounting assembly is in the unlocked position, the steering wheel assembly is switchable between at least a first working position and a second working position.

Abstract: A chain saw includes a connection rod and a front end assembly disposed at a front end of the connection rod. The front end assembly includes a motor, an output device, a transmission mechanism, and a front end casing. A ratio of rated output power P of the motor to a maximum weight of the chain saw is greater than or equal to 150 W/kg and less than or equal to 265 W/kg. The motor includes a rotor shaft, a rotor sleeve installed to the rotor shaft configured to rotate synchronously with the rotor shaft, a stator core disposed at least partially in the rotor sleeve, and a stator coil wound around the stator core.