| 摘要 |
A lever assembly for a retainer which retains a circuit board in an enclosure. The retainer includes a rotatable camshaft. The lever assembly includes a bracket on the enclosure and a rotatable lever at the end of the camshaft. The lever includes a distal arm which engages with the bracket to insert and extract the circuit board into and from the enclosure. A spring element, coupled to either the lever or the end of the camshaft, creates a spring resistance force which biases the lever against the camshaft. In one embodiment, the spring element is a clip on the camshaft which exerts a compressive spring force against the lever. In another embodiment, a spring pin is coupled to the lever and exerts a compressive spring force against the camshaft.
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