Chain saw
AssigneeNanjing Chervon Industry Co., Ltd.
InventorsToshinari Yamaoka, Zhusheng Nie, Xiaozhe Zhao, Min Yi, Zhaodi Ou, Haodong Chen
Life of this patent
Estimating the term…
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.
Claims20
A chain saw, comprising:
- a connection rod;
- and
- a front end assembly, disposed at a front end of the connection rod, comprising a motor, an output device comprising a guide plate and a chain wound around the guide plate to be driven by the motor, a transmission mechanism configured to connect the motor to the output device, and a front end casing configured to support the motor and the output device;
- wherein 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 and the motor comprises a rotor shaft configured to rotate around a first axis, a rotor sleeve installed to the rotor shaft and 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.
A chain saw, comprising:
- a connection rod;
- and
- a front end assembly disposed at a front end of the connection rod comprising a motor, an output device comprising a guide plate and a chain wound around the guide plate to be driven by the motor, a transmission mechanism configured to connect the motor to the output device, and a front end casing configured to support the motor and the output device;
- wherein a diameter of the motor is less than or equal to 38 mm and 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.
A chain saw, comprising:
- a connection rod;
- and
- a front end assembly disposed at a front end of the connection rod comprising a motor, an output device comprising a guide plate and a chain wound around the guide plate to be driven by the motor, a transmission mechanism configured to connect the motor to the output device, and a front end casing configured to support the motor and the output device;
- wherein the motor comprises a rotor shaft configured to rotate around a first axis, a rotor sleeve installed to the rotor shaft and 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, and a diameter D1 of the rotor sleeve is less than or equal to 38 mm.
Dependencies are inferred from the claim text.