| 摘要 |
In a chain saw including a housing (10) and a guide bar (11) provided with a saw chain (16), the guide bar is releasably attached at one of its ends to the housing and axially slidable by means of an adjusting means to adjust the tension of the saw chain. The adjusting means comprises a screw (17) extending generally parallel to the guide bar and having one end attached to the housing in a non-rotatable manner, and a nut (18) engaging the screw and being operatively connected to the guide bar in order to provide an axial adjustment of the guide bar by rotation of the nut. The nut is rotated by means of a gear (19, 20) having a drive shaft (21) extending through a bore (22) in the guide bar. |
