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    • 5. 发明授权
    • Chainsaw having ventholes for ventilation
    • 电锯通气孔
    • US09494120B2
    • 2016-11-15
    • US13735837
    • 2013-01-07
    • Hitachi Koki Co., Ltd.
    • Kenji Naganuma
    • F01P1/06F02M69/00B27B17/00
    • F02M69/00A01G3/086B27B17/00F02M35/1017
    • A chainsaw includes: an engine unit; a fuel supplying device configured to supply fuel to the engine unit; and an engine chamber defining portion defining an engine chamber therein. The engine unit includes: a cylinder unit housing a piston therein; a crankshaft configured to be driven by the piston; and a crank case configured to support the cylinder unit and house the crankshaft therein. The cylinder unit is accommodated in the engine chamber. The engine chamber defining portion has a partitioning portion interposed between the cylinder unit and the fuel supplying device and is formed with a first engine chamber venthole and a second engine chamber venthole adjacent to the cylinder unit for achieving ventilation between the engine chamber and atmosphere.
    • 电锯包括:发动机单元; 燃料供给装置,其构造成向所述发动机单元供给燃料; 以及在其中限定发动机室的发动机室限定部分。 发动机单元包括:将活塞容纳在其中的气缸单元; 被配置为由所述活塞驱动的曲轴; 以及构造成支撑所述气缸单元并将所述曲轴容纳在其中的曲轴箱。 气缸单元容纳在发动机室中。 发动机室限定部分具有介于气缸单元和燃料供应装置之间的分隔部分,并且形成有与气缸单元相邻的第一发动机室通气孔和第二发动机室通气孔,用于实现发动机室和大气之间的通风。