| 摘要 |
<p>A chain saw has a hand grip (5) engaging a stud bolt from a main saw body (1) for tightening a clutch cover (9) and a guide bar (4) against the main body (1). In one preferred embodiment the hand grip (5) is captively held in the cover (9) by retaining member (40) and cannot get lost. In another or the same preferred embodiment, the hand grip (5) includes two pivotal levers (10, 11) that are interconnected to be rotated in opposite directions from an inner collapsed position to an outer exposed position and back. The levers (10, 11) are biased toward both positions by means of at least one torsion spring (15, 16), which also provides the interconnection of the levers (10, 11). With no increase in hand grip size, the use of two levers (10, 11) increases the applied torque with about 50 %.</p> |
