| 摘要 |
<p>A hand held power tool (10), which comprises: a motor room (19) that houses a motor that drives an output shaft; a bevel gear (12, 13) comprising an interconnected pinion gear (12) and crown gear (13), wherein the pinion gear (12) is connected to a pinion shaft (11) that is drivingly connected to the output shaft and the crown gear (13) is drivingly connected to a tool holding shaft (14); a gear housing (18) that delimits a fluid tight gear space (26) around the bevel gear (12, 13); a bearing (15) arranged around the pinion shaft (11), close to the pinion gear (12), which bearing (15) delimits a confined space (25) around the pinion shaft (11) and within the gear space (26); and a fluid tight axial sealing (20) arranged around the pinion shaft (11) inside the confined space (25) of the gear space (26), which sealing (11) seals off the gear space (26) from the motor room (19). At least one fluid conveying opening (24a, 24b) is arranged to put the confined space (25) of the gear space (26) in fluid contact with the rest of the gear space (26). Thereby, the lubrication fluid present in the gear space (26) will provide both lubrication and cooling to the axial sealing (20).</p> |
