Brushcutter

A brushcutter includes: a centrifugal clutch (20) that transmits a drive force of an engine from a crankshaft to a drive shaft; a clutch housing (23) covering the cooling fan and the centrifugal clutch, the clutch housing being made of a synthetic resin; and a bearing that is held inside the clutch...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KAWASAKI YUUSUKE, KIMURA TAKAYUKI, HOKARI HIROSHI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL COOLING OF INTERNAL-COMBUSTION ENGINES COOLING OF MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INTERNAL-COMBUSTION PISTON ENGINES LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	A brushcutter includes: a centrifugal clutch (20) that transmits a drive force of an engine from a crankshaft to a drive shaft; a clutch housing (23) covering the cooling fan and the centrifugal clutch, the clutch housing being made of a synthetic resin; and a bearing that is held inside the clutch housing (23) and supports a coupling shaft that couples the drive shaft and the centrifugal clutch (20). A volute-shaped air-flow space (27) defined including a rise wall (26) surrounding the centrifugal clutch (20) is provided inside the clutch housing (23) near an outer circumference of the centrifugal clutch (20). An inflow opening (28, 29) that lets a cooling air flowing in the air-flow space (27) flow into an inner air-flow space (53) and an outflow opening (52) that lets the cooling air flowing in the air-flow space (53) flow out to the air-flow space (27) are provided on the rise wall (26).