| 摘要 |
In apparatus for holding printed circuit cards, each card (29) is mounted in a cassette (151). The apparatus includes a housing (13) incorporating a pair of racks (35, 37), each including a plurality of wires (41), defining channels to receive the cassettes (151). For each channel a pair of levers (171U, 171L) is pivotally mounted on crosswires (431) incorporated in the racks (35, 37). Movement of the lever handles (105) in a first direction drives the associated cassette (151) such that connectors (147) on the associated printed circuit card (29) engage with mating connectors in the housing (13). The levers (171U, 171L) move to over-center positions to retain the connectors (147) firmly in engagement. Movement of the levers (171U, 171L) in a second direction disengages the connectors (147) and moves the cassette (151) in an outward direction. The cassette mounting arrangement alleviates possible damage to the card (29) resulting from the forces required for disengaging the connectors (147). |
