| 摘要 |
A chain saw where the saw chain is tensioned by inserting and rotating a key (25, 26) through the clamping plate (19), and the key has one cylindrical shaft portion (26) guided by a hole (22) in the clamping plate and a pinionshaped end (25) engaging a corrugated part (17) of the edge of a longitudinal slot (16) in the chain guide bar (15), thereby moving guide bar lengthwise, without use of any tensioning mechanism.
|
