| 摘要 |
<p>A portable power tool comprising a working tool assembly (5), a body (4), an elongate guide rod (2a), a load relieving system (3) comprising a harness (3d), a support frame (3a, 3b), and a cord (11). The cord (11) is arranged to interconnect the guide rod (2a) and the support frame (3a, 3b). The cord is arranged to be connected to the support frame (3a, 3b) by means of a cord attachment assembly (100) having a cord clamping portion (13) arranged to clamp a portion (11a) of the cord so as to fix the cord (11) to the support frame (3a, 3b), and a cord passage portion (14) through which the cord (11) may pass so as to release the cord (11) from the support frame (3a, 3b). The cord attachment assembly (100) is configured so as to actuate automatic movement of the clamped portion (11a) of the cord (11) from the cord clamping portion (13) to the cord passage portion (14) when a force (F1) acting on the clamped portion (11a) of the cord (11) in a first direction exceeds a predetermined threshold value.</p> |
