| 摘要 |
<p>A cord retraction assembly (50) for an electronic device includes a reel (80) for winding and retracting the cord (44), a catch element (102) adapted to engage the reel (80) to prevent retraction of the cord (44), and an interlock (160) for disabling the catch element (102) when the cord (44) is wound onto the reel (80). The catch element (102) is urged into engagement with the reel (80) by a spring to prevent retraction of the cord (44) during use. A release button (130) disengages the catch element (102) from the reel (80), allowing the cord (44) to retract. The interlock (160) comprises a pivotally-mounted arm (162) that rides over the cord (44) as the cord (44) accumulates on the reel (80). The accumulation of the cord (44) on the reel (80) pushes the arm (162) outward into engagement with the catch element (102) so as to prevent the catch element (102) from moving back to the engaged position. As the cord (44) is unwound from the reel (80), the catch element (102) is able to return to the engaged position.</p> |
