| 摘要 |
<p>A support assembly (62) for an output shaft (20) of a jigsaw is disclosed. The support assembly (62) comprises a support housing (64), a lower bearing (102) arranged in the support housing and adapted to support an output shaft (20) of the jigsaw for reciprocating movement of the output shaft along a first axis relative to the lower bearing and to substantially prevent movement of the output shaft (20) relative to the lower bearing (102) in a direction transverse to the first axis, and a blade support roller (110) adapted to abut a jigsaw blade (18). A support arm 108 supporting the blade support roller (110) is adapted to pivot to a limited extent relative to the lower bearing (102) about at least one second axis transverse to the first axis to minimise the extent to which a force applied by the jigsaw blade (18) to the blade support roller (110) during cutting action causes the lower bearing (102) to apply a turning moment to the output shaft (20) about an axis transverse to the first axis. <IMAGE></p> |
