Patent ID: 9121339
Filing Date: 2015-09-01
Classification: F01P,F02B

Abstract:
1. A brushcutter comprising: an engine; a cooling fan attached to a crankshaft of the engine; a drive shaft that has a distal end attached with an attachment; a centrifugal clutch that transmits a drive force of the engine from the crankshaft to a base end of the drive shaft; a clutch housing that covers the cooling fan and the centrifugal clutch, the clutch housing being made of a synthetic resin; wherein the clutch housing comprises cylindrical rise wall that rises towards the cooling fan and surrounding the centrifugal clutch, provided inside the clutch housing adjacent to an outer circumference of the centrifugal clutch and defining an air-flow space surrounding the clutch; and, at least one inflow opening on the rise wall that enables a cooling air flowing in the air-flow space, wherein a guide that partitions the air-flow space, to guide the cooling air into the inflow opening, is provided immediately at a downstream side of the inflow opening, and wherein the guide is provided by a part of a muffler plate disposed between an exhaust muffler attached to the engine and a cylinder of the engine.