| 摘要 |
<p>A power tool (10) for delivering a torque in order to tighten joints, which power tool (10) comprises a output shaft (19) for connection to a screw or a nut holder and a motor (11) arranged to drive a motor shaft (12), the motor (11) being arranged inside a tool housing (20, 24, 28), wherein the motor shaft (12) is connected to the output shaft (19) via a planet gear (13) comprising a sun wheel (14), a gear rim (15) and planet wheels (16) that are interconnected by a planet carrier (17) and are arranged there between, wherein the motor shaft is connected to the sun wheel (14). The power tool comprises a flywheel (22),which is arranged to rotate with respect to the tool housing and which is arranged to receive reaction forces from the output shaft (19) via said planet gear (13).The power tool comprises a rotation lock (30), which is arranged to, when activated,lock part of the planet gear (13) from rotation,such that the motor (11) may be used to put the flywheel (22) in rotation.</p> |
