Abstract: A die-cast seat cushion frame is provided for a vehicle seat, which has connecting portions defined integrally in its two lateral frame portions. The connecting portions are adapted for connection with a slide rail device, wherein a cross beam portion is so extended between the two lateral frame portions that two ends of the cross beam portion are integrally connected with the two lateral frame portions, respectively, at points corresponding to the connecting portions. This provision of cross beam portion not only renders the seat cushion frame much robust and light in weight, but also serves to receive a seat occupant's buttocks portion against its undesired forward sliding or slippage on a seat cushion in a sudden deceleration or collision case.

Abstract: A die-cast seat cushion frame for vehicle seat, which has connecting portions defined integrally in its two lateral frame portions, the connecting portions being adapted for connection with a slide rail device, wherein a cross beam portion is so extended between the two lateral frame portions that two ends of the cross beam portion are integrally connected with the two lateral frame portions, respectively, at points corresponding to the connecting portions. This provision of cross beam portion not only renders the seat cushion frame much robust and light in weight, but also serves to receive a seat occupant's buttocks portion against its undesired forward sliding or slippage on a seat cushion in a sudden deceleration or collision case.

Abstract: A casting die comprises upper and lower dies, each having integral projections for forming holes in a resulting die-cast product. When the upper and lower dies are engaged together, their respective projections are matched and contacted with one another to define bridge-like inner die elements between the two dies, so that holes may be readily formed via those inner die elements in a product being cast in the dies.