Work machine

Abstract

This specification provides a technique for cooling a control unit. The working mechanism includes: a motor for driving a working part; a fan driven by the motor to create an airflow in a first space; a control unit disposed in the first space; a partition wall separating the first space and a second space; a first opening formed in the partition wall, connecting the first space and the second space; and a rib extending from the partition wall within the first space, forming an air passage between the rib and the control unit for airflow. The control unit includes: a circuit board for controlling the drive of the motor; and a housing for housing the circuit board. The control unit has a first surface opposite the rib. When viewed from a first direction orthogonal to the first surface, the rib and the first surface at least partially overlap. In the first direction, the distance between the rib and the first surface is less than the thickness of the housing.

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