| 摘要 |
A card frame for accommodating circuit cards comprises side plates (10) joined by cross rails (12). The side plates (10) are die cast and have ridges (30) integrally cast therewith, the opposed faces of the ridges acting as ledges. The ridges (30) extend in the front to rear direction of the card frame. The cross rails (12) are secured at their end to the side plates (10) by a single screw (16), twisting of the cross rails 12 being prevented by their abutting the above-mentioned ledges. |
