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公开(公告)号：EP2643568B1
公开(公告)日：2018-07-04
申请号：EP10859973.9
申请日：2010-12-22
申请人： Husqvarna AB
发明人： ANDERSSON, Lars , DONNERDAL, Ove
IPC分类号： F02B75/06 , F01N13/00 , F01N13/18 , F01N1/00 , F02B63/02 , F02B75/02 , F16F15/26 , B23D45/16 , B23D47/12 , B25F5/02 , B28D1/04
CPC分类号： B28D1/04 , B23D45/16 , B23D47/12 , B25F5/02 , F01N1/00 , F01N13/002 , F01N13/1888 , F01N2260/022 , F01N2340/04 , F01N2590/06 , F02B63/02 , F02B75/06 , F16F15/26
摘要： A power cutter powered by a single cylinder internal combustion engine, the power cutter including: a tool unit having at least one tool, which can be rotated about an axis of rotation; a drive unit including an engine, the engine including an engine cylinder having a cylinder bore centerline, a piston, a crankshaft with a crankshaft axis of rotation and a flywheel, the crankshaft running in a counter clockwise direction as seen towards the flywheel; a cutter arm attached to the drive unit in its inner end and its outer end carrying the tool unit, a centerline of the cutter arm essentially follows a connection line between the axis of rotation of the tool and the axis of rotation of the crankshaft.
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公开(公告)号：EP2214876A1
公开(公告)日：2010-08-11
申请号：EP08853770.9
申请日：2008-11-25
申请人： Husqvarna AB
IPC分类号： B27B17/08
CPC分类号： B27B17/083
摘要： A chainsaw having a brake arrangement comprising: - a kickback brake drum (10) arranged to rotate together with a drive sprocket driving a saw chain of a chainsaw, - a kickback brake for quickly stopping the saw chain if at least one kickback actuator (7) is actuated, the kick back brake including a kickback brake band (11) extending around the kickback brake drum (10) and means for tightening the kickback brake band (17-19, 22) around the kickback brake drum (10), and; - a coasting brake weaker than the kickback brake being arranged to brake the saw chain (2) unless a coasting actuator of the chainsaw is actuated, the coasting brake includes a coasting brake band extending around a coasting brake drum (10) arranged to rotate together with the drive sprocket (37), and means for tightening the coasting brake band (20, 22, 23) around the coasting brake drum, wherein the coasting brake band is either at least one longitudinally slit portion (11b) of the kickback brake band or a separate brake band.
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公开(公告)号：EP2153030A1
公开(公告)日：2010-02-17
申请号：EP08779357.6
申请日：2008-06-05
申请人： Husqvarna AB
摘要： A lubrication system for a four stroke engine, comprising: an oil pan (1) for storing lubrication oil; a crankcase (2), wherein a crankshaft (6) is disposed, which crankshaft (6) has a balance weight (61) and is coupled with a piston (62) of a cylinder (5); a gear assembly room (3); a rocker-arm chamber (4); and a gas-oil separator (7) for separating gas and oil from a mix of gas and oil; wherein the oil pan (1) is communicated with the crankcase (2) by means of an oil suction passage (21), in which a first check valve (211) is disposed; the crankcase (2) is communicated with the gear assembly room (3) by means of a first oil delivery passage (22); the gear assembly room (3) is communicated with the rocker-arm chamber (4) by means of a second oil delivery passage (41), and the gear assembly room (3) is communicated with the oil pan (1) by means of a third oil delivery passage (31); the rocker-arm chamber (4) is communicated with the crankcase (2) by means of a first oil return passage (42), in which a second check valve (421) is disposed.
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公开(公告)号：EP2643568A1
公开(公告)日：2013-10-02
申请号：EP10859973.9
申请日：2010-12-22
申请人： Husqvarna AB
发明人： ANDERSSON, Lars , DONNERDAL, Ove
CPC分类号： B28D1/04 , B23D45/16 , B23D47/12 , B25F5/02 , F01N1/00 , F01N13/002 , F01N13/1888 , F01N2260/022 , F01N2340/04 , F01N2590/06 , F02B63/02 , F02B75/06 , F16F15/26
摘要： A power cutter including a tool unit, an internal combustion engine having an engine cylinder (114) with cylinder bore having a centre line and an exhaust port formed in the engine cylinder (114), a crankshaft, crankcase and an assembly for supplying air and fuel to the engine, and a muffler (302) accommodated in a close and side by side relationship with the engine cylinder (114), the muffler (302) includes an exhaust gas inlet (304) and an exhaust gas outlet (306), such that the exhaust gas inlet (304) is adapted to receive the exhaust gases from a exhaust port (308) of the engine cylinder (114), wherein the exhaust gas inlet (304) is provided on the top or bottom or local side of the muffler. The muffler (302) is arranged to be in communication with the exhaust port (308) of the engine cylinder (114) by means of a pipe (316) for improving the air flow around the pipe (316) and around the exhaust port (308) of the engine cylinder (114) to thereby lower the temperature of the exhaust port (308) of the engine cylinder (114) and the exhaust gases entering the exhaust gas inlet (304) of the muffler (302).
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公开(公告)号：EP2148767B1
公开(公告)日：2017-01-11
申请号：EP07748081.2
申请日：2007-04-27
申请人： Husqvarna AB
IPC分类号： B27B17/00
CPC分类号： B27B17/0008
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公开(公告)号：EP2153030B1
公开(公告)日：2011-10-05
申请号：EP08779357.6
申请日：2008-06-05
申请人： Husqvarna AB
摘要： A lubrication system for a four stroke engine, comprising: an oil pan (1) for storing lubrication oil; a crankcase (2), wherein a crankshaft (6) is disposed, which crankshaft (6) has a balance weight (61) and is coupled with a piston (62) of a cylinder (5); a gear assembly room (3); a rocker-arm chamber (4); and a gas-oil separator (7) for separating gas and oil from a mix of gas and oil; wherein the oil pan (1) is communicated with the crankcase (2) by means of an oil suction passage (21), in which a first check valve (211) is disposed; the crankcase (2) is communicated with the gear assembly room (3) by means of a first oil delivery passage (22); the gear assembly room (3) is communicated with the rocker-arm chamber (4) by means of a second oil delivery passage (41), and the gear assembly room (3) is communicated with the oil pan (1) by means of a third oil delivery passage (31); the rocker-arm chamber (4) is communicated with the crankcase (2) by means of a first oil return passage (42), in which a second check valve (421) is disposed.
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公开(公告)号：EP2148767A1
公开(公告)日：2010-02-03
申请号：EP07748081.2
申请日：2007-04-27
申请人： Husqvarna AB
IPC分类号： B27B17/00
CPC分类号： B27B17/0008
摘要： A handle portion for a hand-held motor-driven tool and a hand-held motor-driven tool including a base portion (20), a rear handle (30) arranged to the rear part (20a) of the base portion (20) and a front handle (40) having a first end (40a) attached to the base portion (20) and a second end (40b) attached to the base portion (20). At least a part of the front handle (40) is arranged as a loop starting from a first lateral face (20c) extending in a direction away from a lower face (20e) of the base portion (20) and further in a direction towards a second lateral face (20d). A first attachment means (12) for attaching the first end (40a) and a second attachment (13) means for attaching the second end are mountable at the same face of the first lateral face (20c), second lateral face (20d) or lower face (20e) of the base portion.
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