Patent ID: 9160211
Filing Date: 2015-10-13
Classification: A01D,H02K

Abstract:
1. A work machine comprising: a housing provided at one longitudinal end of the work machine; an output shaft rotatably supported at the housing; a brushless motor accommodated in the housing and including a rotor provided integrally with the output shaft, a stator fixed to the housing, and a fan rotatable with the rotor; a drive circuit including an FET as a switching element and a control section to control the FET, and driving the brushless motor; a work tool that can be attached to the output shaft and is provided at the one longitudinal end of the work machine; an operation section that is disposed apart from the housing and comprises a handle; and a coupling section that couples the housing to the operation section, wherein the coupling section is hollow, wherein the fan is rotated to suction air into an inlet port disposed apart from the work tool and the housing, and to exhaust the suctioned air through the inside of the coupling section and out of an exhaust port formed in the housing.