| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a retaining assembly for realizing a tension regulating structure which regulates the tension of a cutting chain of a chain saw. <P>SOLUTION: The retaining assembly includes a rotary knob which is interlocked with an engine chassis 14, a clutch cover 30 and a guide bar 20 of the chain saw. Further, the rotary knob can rotate centering around a rotating shaft between a tightening position for retaining the guide bar 20 in a regular spot and a loosening position for enabling an operation to regulate the tension of the saw chain to be performed by changing the position of the guide bar 20. In addition, the rotary performance of the knob can be achieved by locking and unlocking the knob through an installed locking mechanism. When the locking mechanism is set to a locking position, the movable engagement point of the locking mechanism extending beyond the region of the knob engages with a fixed engagement point. When the locking mechanism is set to an unlocking position, the movable engagement point which recedes into the region of the knob is disengaged with the fixed engagement point. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
