| 摘要 |
A ejection mechanism is provided for disengaging a riser card from a backplane board of a computer system. The mechanism includes an elongate lever having an upper manipulation region, a lower abutting region and a pivot point located between the upper and lower regions. The elongate lever is mounted on a riser card at the pivot and generally extends downward a sufficient distance as to contact the backplane board upon rotation of the lever, and extends upward a sufficient distance to create sufficient leverage for disengaging the riser card. The lever is configured to have a more narrow cross-section at the lower abutting region to facilitate movement of the lower region along the backplane board towards the riser card. To operate the ejection mechanism, the user will apply a pulling force to the upper manipulation arm in a direction away from the riser card. Upon rotation of the lever, the lower abutting region will contact the surface of the backplane board, the mounting location of the pivot on the riser card causes the backplane board surface to interfere with the rotation of lower abutting region. With continued application of the pulling force, the lower abutting region both presses against and translates along the backplane board surface, forcing the pivot point and attached riser card upward.
|
