Huixing Fu,Fangjie Nie,Toshinari Yamaoka,Fangtian Deng
申请号：
US15258364
公开号：
US20170066119A1
申请日:
2016.09.07
申请国别(地区):
US
年份:
2017
代理人:
摘要：
A handheld electric tool includes a working device for performing a function of the handheld electric tool, a powering device for provide a driving force to the working device, and a connecting device for connecting the working device and powering device. The powering device includes: an electric motor, a power housing having an air inlet and an air outlet, a transmission mechanism for transmitting power generated by the electric motor and a circuit board for controlling the electric motor, a fan can be driven by the electric motor to provide an airflow which flows from the air inlet to the air outlet. The circuit board, the transmission mechanism and the electric motor are disposed between the air inlet and the air outlet such that the airflow flows through the circuit board, the transmission mechanism and the electric motor successively. The handheld electric tool has excellent cooling effect.
